Yellowstone National Park Things to Do

This trailhead is located on the southeast side of the Uncle Tom's parking lot on the South Rim Drive of the Grand Canyon of the Yellowstone. From this trailhead, you can access the following trails:- Ribbon Lake Trail Ribbon Lake Trail An easy 5.8-mile (9.3-km) there-and-back trail. The trail traverses through forest with views of the Grand Canyon. CAUTION: Grizzly bears frequent this area. Backcountry RegulationsPermit required for fishing, boating, riding, and overnight

No swimming at Boiling River. Currently, swimming is not possible at Boiling River because of the impacts to the river from the 2022 floods. More Soaking & Swimming Swimming is not recommended in Yellowstone, and is occasionally prohibited, because most lakes and streams are dangerously cold. Firehole Canyon, near Madison Junction, has a swimming area in summer. Think Safety, Act Safely From burning hot hydrothermal features, to unpredictable wildlife, to steep terrain, Yellowstone is a dangerous place. You are responsible for your safety. As such, please remember these safety tips: Never touch any hydrothermal waters—they can scald you. Observe safe distances from all wildlife. Stay behind fencing, guard rails, and ledges. Use caution when around park waters—they are cold and fast. Show patience and courtesy to other people. Aquatic Invasive Species Red-rimmed melania, a small snail imported by the aquarium trade starting in the 1930s, was discovered in the Boiling River swimming area in 2009. An aquatic invasive species disrupts ecological processes because it is not indigenous to the ecosystem. Invasive organisms can cause species extinction, with the highest extinction rates occurring in freshwater environments. Red-rimmed melania is unlikely to survive downstream of the Boiling River during the winter, but it could become established in other thermal water in the park. Accessibility The first 50 yards of the compacted soil trail is accessible. Beyond this point, there are rocks, eroded trail surfacing, and drop-offs, as well as a couple small hills with up to a 20% grade.

This is a remote trailhead at the eastern boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trails within the park:- Bootjack Gap Trail- Miller Creek Trail

This trailhead is located in the Bridge Bay Developed Area. The following trail can be accessed from this trailhead:- Natural Bridge Trail Natural Bridge Trail An easy 2.5-mile (4-km) there-and-back trail that travels through a forest and along an old service road to a natural bridge, which was cut out of a cliff of rhyolite rock by Bridge Creek. Backcountry RegulationsPermit required for fishing, boating, riding, and overnight camping. More information at the Center Backcoun

2025 Season Open May 23 - September 15, 2025. Backcountry Permits are available 8:00 am to 4:30 pm daily. For help during non peak season, call the Central Backcountry Office at 307-344-2160 Purchase fishing permits, entrance passes, Interagency Senior and Access passes, overnight backcountry camping permits,boat permits and aquatic invasive species inspections, and non-fee horseback day riding permits. Trail, hiking, and horseback riding information Overnight Backcountry Camping Permits are required year-round for all overnight stays in Yellowstone's backcountry. A backcountry permit allows the permit holder and group members to camp in a designated backcountry location. Permits are not required for day hiking. Boat related backcountry permits can only be picked up at the Bridge Bay Ranger Station, Grant Backcountry Office, or Snake River Ranger Station. Backcountry Fees Recreation Fee: $5 per person, per night, plus a $10 reservation fee. Fees apply to all ages. The recreation fee is charged year-round, whether secured through Recreation.gov or in-person at a backcountry office. Boats & Float Tubes Boat Permits and Aquatic Invasive Species (AIS) Inspections are required for all boats and float tubes. Boating is not allowed on Yellowstone's rivers (this includes float tubes).Please view our boating regulations for futher details. Boat permits (motorized, non-motorized, and float tubes) can be acquired at the Lewis Lake Ranger Station, Grant Ranger Station, and Bridge Bay Ranger Station. Float tube permits are also available at the Bechler Ranger Station, Snake River Ranger Station, West Yellowstone Visitor Information Center, Mammoth Backcountry office (Located in the Albright Visitor Center), and Northeast Entrance Station. Backcountry Office Locations Albright Visitor Center (basement) Tower Ranger Station Bridge Bay Ranger Station Grant Village Visitor Center Snake River Ranger Station Bechler Ranger Station West Yellowstone Visitor Information Center Reservations Advanced reservations can be made online at Recreation.gov or in-person at one of the park's backcountry offices. Reservations must be converted into a permit, in person at a backcountry office no more than two days before the trip start date. Detailed information on advanced reservations is available online.

Located on Yellowstone Lake, this store has supplies for boaters, anglers, campers, and boat tour passengers.

Picnic area on Yellowstone Lake at Bridge Bay

This is a remote trailhead at the southeast boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trails within the park:- Yellowstone Meadows Cutoff Trail- Thorofare Trail- Hawk's Lake Trail- Thorofare-South Boundary Cutoff Trail- South Boundary Trail: Lynx Creek

This is a remote trailhead at the northern boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trail within the park:- Buffalo Fork Trail

Located at Canyon Village, this store has groceries, ice cream, souvenirs, and apparel available for purchase.

This is a remote trailhead at the western boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trail within the park:- Boundary Creek Trail

This is a remote trailhead at the northern boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trail within the park:- Buffalo Plateau Trail

Bunsen Peak prominently sits south of Mammoth Hot Springs. From this trailhead, you can embark on the following trails: Bunsen Peak Trail Bunsen Peak Road Trail Osprey Falls Trail Parking is limited. Winter trailhead access requires a snow coach drop-off, or skiing up from the gate at the Upper Terrace parking lot. Bunsen Peak Trail A moderate 4.2-mile (6.7-km) there-and-back trail to the summit of Bunsen Peak. Although this is a relatively short hike, the elevation gain is 1,300 feet (396 m) over 2.1 miles (3.2 km) of switchbacked trail. CAUTION: Grizzly bears frequent this area. Bunsen Peak Road Trail A 6-mile (9.6-km) one-way, moderate trail that follows an old service road curving around the southern and eastern sides of Bunsen Peak. The first 3 miles (4.8 km) are mostly level. On the northeast side of Bunsen Peak, the road becomes steep and winding, dropping 960 feet in 2.5 miles (292 m in 4 km) to Glen Creek. CAUTION: Some curves have steep drop-offs and can be hazardous when icy. Osprey Falls Trail A strenuous, 8-mile (12.9-km) there-and-back trail that descends into one of the deepest canyons in the park. Follow Bunsen Peak Road through grassland and burned forest 3 miles (4.9 km) to Osprey Falls Trail. Descend 700 feet (213 m) into Sheepeater Canyon. Osprey Falls, on the Gardner River, plunges 150 feet (46 m) over the edge of a lava flow. Return by the same route. Hiking, biking, skiing, and snow-shoeing allowed on Bunsen Peak Road. No bikes allowed on Osprey Falls Trail. CAUTION: Grizzly bears frequent this area. Backcountry Regulations Permit required for fishing, boating, riding, and overnight camping. More information at the Center Backcountry Office: (307) 344-2160. Hiking Hike in groups of 3 or more; keep your group together. Tell someone where you are going and when you expect to return. Know your route, carry a map, and be able to navigate. Do not hike after dark. Stay on established trails; off-trail travel prohibited in thermal areas. Fishing and Boating Aquatic Invasive Species (AIS) inspection required for all watercraft including boats, float tubes, and stand up paddle boards. Felt soles prohibited. Riding and Packing Proof of negative Coggins test within last 12 months required. Food Storage and Camping These regulations apply to ALL backcountry users. Sleep 100 yards (91 m) from your food storage and cooking areas. Do not leave food, trash, toiletries, backpacks, coolers, water bottles, or any potential attractant unattended. Store food in an approved bear resistant container or hang on a food pole 10 feet (3 m) above the ground and 4 feet (1 m) from sides. Carry a minimum of 35 feet (11 m) of rope. Campfires allowed only in designated campsites within established fire rings. Extinguish campfires completely before leaving site. Follow LEAVE NO TRACE travel and camping techniques. Enjoy the backcountry and help keep it clean for others to enjoy. Bury human waste and toilet tissue in a 6–8 inch (15–18 cm) deep “cat hole” at least 100 feet (30 m) from water and trails. River Crossings Park waters are swift and cold. Swimming in park rivers is not recommended. River crossings are hazardous. Lightning Safety During thunderstorms, descend to lower elevation, avoid open areas and isolated tall trees. Assume lightning position: feet together, crouch on foam pad or sit on pack, hands over ears. Regulations Leave What You Find: Do not collect anything from the park. No Pets: No pets on trail. Obtain service animal regulations at backcountry offices. No Hunting: No hunting or discharge of firearms. No Motorized Vehicles: No motorized vehicles on trails. Wheeled Vehicles Restricted: No bicycles, strollers, or wheeled vehicles (except wheelchairs), except where specified. In an emergency, dial 9-1-1 or contact the nearest ranger station. Animals are Dangerous Do not approach or feed any animal. Bison and elk have injured people. Stay 100 yards (91 m) from bears and wolves. Stay 25 yards (23 m) from all other animals. Be Prepared for a Bear Encounter Grizzly and black bears inhabit all of Yellowstone National Park. Be Alert: Watch for signs of bear activity: scratches in trees, tracks, scat, or dig sites. Avoid dead animals. Make Noise: Avoid surprising a bear by calling out and clapping your hands at regular intervals to make your presence known. Carry Bear Spray: Carry bear spray and know how to use it. Keep it immediately available, not inside your pack. Hike in Groups: Travel in groups of 3 or more is recommended. Stay with your group at all times. What to do... If You Encounter a Bear: Stay calm, do not run. Quietly detour or back away; stop if this seems to agitate the bear. Stay at least 100 yards (91 m) from bears. Do NOT feed bears or other animals. If a Bear Charges You: Stand still, do not run. Stand your ground and use your bear spray. Spray when the bear is 60 feet (18 m) away or closer. If a bear charges, it may be a bluff charge. If a Bear Makes Contact: Drop to the ground; play dead. Lie face down and clasp your hands over the back of your neck; stay still and silent. Wait several minutes after the bear leaves before getting up and leaving the area.

Trailhead south of Mammoth Hot Springs

Burned trees and those that have died for other reasons still contribute to the ecosystem. For example, dead standing trees provide nesting cavities for many types of animals; fallen trees provide food and shelter for animals and nutrients for the soil. However, park managers will remove dead or burned trees that pose safety hazards along roads or in developed areas. How Does Fire Benefit Yellowstone? Fires are a natural part of the Greater Yellowstone Ecosystem and vegetation has adapted to fire and in some cases may be dependent on it. Fire promotes habitat diversity by removing the forest overstory, allowing different plant communities to become established, and preventing trees from becoming established in grassland. Fire increases the rate that nutrients become available to plants by rapidly releasing them from wood and forest litter and by hastening the weathering of soil minerals. This is especially important in a cold and dry climate like Yellowstone’s, where decomposition rates are slower than in more hot and humid areas. Additionally, natural fires provide an opportunity for scientists to study the effects of fire on an ecosystem.

The heat of underground fractures releases deposits of oil from rocks deep below the surface to slowly and sporadically seep to the surface at Calcite Springs. The springs are hot enough at depth to liquefy large quantities of sulfur that are found here. Occasionally, the molten sulfur oozes the surface where it flows like molasses. Because contact with air causes the liquid sulfur to turn to black, it is impossible to tell by looking if the dark areas are oil and sulfur. Calcite Springs was named for the milky-white calcite crystals that cover the area. Mixed in with the calcite are translucent, honey-colored barite crystals. Inside the conduits of hot spring are beautiful but smelly yellow sulfur crystals. The Calcite Springs hydrothermal area is closed to visitors. To see directly down into Calcite Springs, hike the Yellowstone River Picnic Area Trail. The short, easy trail follows the canyon rim opposite this overlook. To reach the trailhead, turn right (north) at Tower Junction and park at the picnic area 0.5 mile beyond (east of) the bridge. Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Wildlife Watching Look for bighorn sheep along the Yellowstone River opposite of Calcite Springs. Animals are Dangerous Do not approach or feed any animal. Bison and elk have injured people. Stay 100 yards (91 m) from bears and wolves. Stay 25 yards (23 m) from all other animals. You are responsible for your safety. Think Safety, Act Safely. Yellowstone is a Dangerous Place.

Picnic area along the Gibbon River

Imagine you are here in the late 1800s, a time when yellow filamentous bacteria was prominent. What colors are present today? This spring occasionally goes dormant for brief periods of time. Vibrant pinks and neons are sometimes seen. Mammoth Hot Springs A network of fractures and fissures form the plumbing system that allows hot water from underground to reach the surface at Mammoth Hot Springs. Small earthquakes may keep the plumbing open. The water comes from rain and snow falling on surrounding mountains and seeping deep into the earth where it is heated. The volcanic heat source for Mammoth Hot Springs remains somewhat of a mystery. Scientists have proposed two sources: the large magma chamber underlying the Yellowstone Caldera or a smaller heat source closer to Mammoth. For hundreds of years, Shoshone and Bannock people collected minerals from the Mammoth Hot Springs terraces for white paint. Travertine Terraces Travertine terraces are formed from limestone (calcium carbonate). Water rises through the limestone, carrying high amounts of dissolved calcium carbonate. At the surface, carbon dioxide is released and calcium carbonate is deposited, forming travertine, the chalky white rock of the terraces. Due to the rapid rate of deposition, these features constantly and quickly change. Accessibility A wheelchair-accessible trail to this view of the spring is available. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

This is a remote trailhead at the eastern boundary of the park that is not accessible by road. From this trailhead, you can embark on the following trails within the park:- Canoe Lake Trail- Miller Creek Trail

Unleaded and diesel #2 gas, RV and auto repairs, and towing service are available at this station during the summer seasons. Gas pumps work 24/7 with a credit card. Restrooms available for customers. Inside the station snacks, drinks, ice, and liquid propane (LP) gas is available for purchase. Propane bottles can be exchanged here. Need assistance? Call 406-848-7548. 2025 Season Store and Gas (LP available): April 25–October 31 Wrecker: April 25–October 31 Repair: May 23–September 1 2022 Season Open daily 8 am–5 pm Store: April 22–October 30 Repairs: May 27–September 5 Wrecker: April 22–October 30 Opening and closing dates are subject to change based on future conditions and public health guidance. --> Accessibility Staffed seasonally during daylight hours and have call buttons at the pumps. Wheelchair-accessible restrooms.

This historic structure houses a variety of dining options, a spacious eating/resting space both inside and outside, restrooms, and a gift shop. This building is open only during the summer season. 2025 Season Canyon Lodge Eatery Customize your meals with fresh sustainable ingredients from two different cafeteria-style service bars. Open daily, May 16–October 26 Canyon Lodge Falls Café For those on the run, the Falls Café offers house-made grab-and-go flatbreads, sandwiches, salads and snacks. The café also offers specialty coffee drinks and sustainably produced alcoholic beverages. Open daily, May 16–October 26 Canyon Lodge Ice Creamery Regardless of how good your day has been, we can help you make it even better with Montana-made ice cream from Big Dipper. Open daily, May 16–September 10 Canyon Lodge M66 Lounge Enjoy appetizers in a casual Mission 66-themed setting. Open daily, May 16–October 26 Canyon Lodge Gift Shop Purchase Yellowstone-related souvenirs and apparel. Open daily, May 16–October 26 Accessibility Wheelchair-accessible, with designated accessible parking in front.

Canyon Lodge and Cabins has more than 500 rooms and cabins spread out through the woods near the Grand Canyon of the Yellowstone River. The 400+ guest rooms are spread across 5 LEED-Gold Certified lodges, with the remain 100+ cabin spaces being more rustic accommodations. All services are located nearby in the Canyon Village area. This reservable lodging facility is operated by a park partner. 2025 Season Lodging - Washburn, Rhyolite: May 16–October 25 Lodging - Chittenden: May 16–October 12 Lodging - Moran, Cascade, Dunraven, Hayden: May 23–October 4 Cabins: May 16–October 4 Dining Washburn Lookout: selection of snacks, sandwiches and beverages throughout the day Western Cabins Built in modules of 4 or 6 units 2 queen beds Private full bathroom Modern furnishings No telephone Additional Details No televisions, radios, and air conditioning available in any park lodging Internet service (Wi-Fi) is available in Canyon Lodge public areas (Washburn Lobby and dining building) for registered guests Accessibility 19 ADA rooms available in Dunraven and Cascade lodges, including 3 accessible suites ADA rooms have grab bars in shower 5 accessible Western Cabin units with roll-in showers Wheelchairs available for loan at the lodge for guests and at visitor center while in the area Reservations 307-344-7311 307-344-5395 for TDD (Telecommunications Device for the Deaf) service online Electric Vehicle Charging Two stations J-1772 plug Level 2 charging Near Rhyolite Lodge

This is where you can mail letters and packages, or buy postage. This location is only open during the summer season. 2025 Season Open daily May 15–October 6 Accessibility Not wheelchair-accessible.

Located in the Canyon Visitor Education Center building. Provides shelter and amenities (light snacks, water, restrooms) for skiers, snowshoers, and snowmobilers during the winter season.

Located at Canyon Village, this store offers camping and outdoor gear, footwear, fishing supplies, and gifts for purchase.

Built in 1909 to house two officers and their families.

This trailhead allows you to embark on a series of trails in the north-central part of the park:- Cascade Creek Trail- Cascade Lake Trail- Observation Peak Trail- Howard Eaton Trail: Cascade Lake-Norris CampgroundA small parking lot is available at the trailhead. Cascade Creek Trail A 3.4-mile (5.5-km) there-and-back trail through Cascade Meadow that ends at the junction with the Cascade Lake Trail. Cascade Lake Trail A moderate 4.4-mile (7-km) there-and-back trail that passe

This is a more remote trailhead along the southern boundary of the park, which can be accessed by road. From this trailhead you can embark on the following trails within the park:- Mountain Ash Creek Trail- Terraced Falls Trail

Picnic area between Canyon and Tower-Roosevelt

The chapel was built in 1913, and was the last building constructed during the Fort Yellowstone days.

From this trailhead you can embark on the following trails:- Cascade Lake Trail- Observation Peak TrailThere is a dedicated parking lot at this trailhead. The nearest restrooms are location to the east at the Cascade Lake Picnic Area. Cascade Lake Trail A moderate 4.4-mile (7-km) there-and-back trail that passes through open meadows to Cascade Lake where wildflowers abound and wildlife is often seen. The trail can be wet and snowy through July. CAUTION Grizzly bears frequen

Picnic area along the Yellowstone River between Fishing Bridge and Canyon

A cone geyser at Upper Geyser Basin

Cauliflower Geyser is a hydrothermal feature at Biscuit Basin.

The first cavalry barracks built in Fort Yellowstone

The second barracks built to house cavalry troops stationed at Fort Yellowstone.

Site of historic cavalry barracks and guardhouse at Fort Yellowstone

This picnic area has 4 picnic tables and 2 vault toilets (wheelchair-accessible). Picnicking Notes Campfires are allowed only in picnic areas with fire grates. Camp stoves (liquid or gas) and self-contained charcoal grills may be used at all locations. Do not feed any wild animals, including birds. It is unhealthy and encourages aggressive behavior. All food, trash, coolers, and cooking tools must be kept secure in a bear-proof container unless in immediate use. Overnight camping is not allowed in any picnic area. Be Alert for Bears Carry bear spray and know how to use it. Hike in groups of three or more people. Make noise in areas with limited visibility. Do not run! Back away slowly.

This trailhead is located along the Cave Falls Road, just north of the southern park boundary. This trailhead provides access to the following trails:- Bechler River Trail- South Boundary Trail: Bechler Ranger Station-Grassy Lake Bechler River Trail A classic, strenuous roughly 30-mile (48-km) one-way backpacking trail in the southwest part of the park that leads past waterfalls and hydrothermal features. The trail starts at either the Bechler Ranger Station or at Lone Star G

Celestine Pool is a hot spring with an average temperature of 183.4°F (84.1°C), an average pH of 8.3, and an average conductivity of 2000 uS/cm. It has been known to has small eruptions of superheated water. When Silex Spring exhibited geyser eruptions, Celestine Pool was also active. Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Fountain Paint Pot Area Hydrothermal features can be grouped into two general categories: those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike. All of these features occur in the Fountain Paint Pot area. Thermus aquaticus, the thermophile that revolutionized DNA replication processes, was discovered in this area. Lower Geyser Basin The Lower Geyser Basin sits on unstable glacial gravel on top of solid rock. The jarring energy of an earthquake can make the gravel vibrate and shift position, and compact or fracture. All these changes affect water supplies to hot springs. They might force muddy water to the surface, clouding existing pools or creating new ones. They might divert water from a pool, causing it to dry up. Water temperatures might also increase or decrease due to these subsurface changes. In the days after the Hebgen Lake earthquake of 1959, all of these changes were observed in various springs of the Firehole River geyser basins. The epicenter (point of origin) of the quake was determined to be about 31 air miles (50 km) northwest of the Fountain Paint Pots area. Great Fountain Geyser, on the Firehole Lake Drive, is the only geyser outside of the Old Faithful area with eruption forecasts. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

A series of hydrothermal pools in the Upper Geyser Basin

A hydrothermal pool in the Upper Geyser Basin

This picnic area has 6 picnic tables and 1 vault toilet. Picnicking Notes Campfires are allowed only in picnic areas with fire grates. Camp stoves (liquid or gas) and self-contained charcoal grills may be used for food preparation at all locations. Do not feed any wild animals, including birds. It is unhealthy and encourages aggressive behavior that may require management action. All food, trash, coolers, and cooking tools must be kept secure in a bear-proof container unless in immediate use. Overnight camping is not allowed in any picnic area. Be Alert for Bears Carry bear spray and know how to use it. Hike in groups of three or more people. Make noise in areas with limited visibility. Do not run! Back away slowly.

The road to Mount Washburn (now called Chittenden Road) was one of Engineer Hiram Chittenden’s achievements. Chittenden had a lasting effect on the appearance of our national parks through his role in designing Yellowstone’s roads, bridges, and other structures. The development of a road system was essential in making Yellowstone more accessible to the public. Even after Yellowstone could be reached by train in 1883, the difficulty of traveling and completing road construction across challenging terrain in a harsh climate enormous labor and innovative engineering. Over the years, advances in road standards and construction technology have led to changes in the roads’ appearance. Chittenden’s overall design has remained largely intact, along with many historical features such as bridges, culverts, and guardrails.

CLOSED IN 2021 This trailhead provides access to the Chittenden Road-Mount Washburn Trail. Parking is limited at this very popular trail. This moderate 5.8-mile (9.3-km) there-and-back trail is the shortest route up to Mount Washburn. The trail follows a service road over a steady incline through forest and above treeline through alpine vegetation. CAUTION Grizzly bears frequent this area.

A hydrothermal pool in the Upper Geyser Basin

A hydrothermal pool in the Upper Geyser Basin

A large hot spring located near the top of the Mud Volcano area.

Cistern Spring and Steamboat Geyser are linked underground, confirmed in 1983 when Cistern Spring began emptying after each major eruption of Steamboat. Otherwise, Cistern Spring is a blue or green pol with constant overflow. Its waters deposit as much as half and inch of sinter a year. Look at the trees around and below this spring. The silica-rich water of Cistern Spring has killed many of them. Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Color and Heat Lovers Hydrothermal features are also habitats in which microscopic organisms survive and thrive. They are called thermophiles: "thermo" for heat and "phile" for lover. Although they are too small to be seen with the naked eye, trillions are grouped together and appear as masses of color. They are nourished by energy and chemical building blocks. Colorless and yellow thermophiles grow in the hottest water. Orange, brown, and green thermophiles grow in cooler waters. Imagine living in near-boiling temperatures, in hydrothermal features with the alkalinity of baking soda, or in water so acidic that it can burn holes in clothing. Microorganisms in Yellowstone need these extremes to survive. Norris Geyser Basin Norris Geyser Basin is one of the hottest and most acidic of Yellowstone’s hydrothermal areas. It is outside of the most recent Yellowstone caldera, but inside the first and largest caldera. It sits on the intersection of three major faults and is a very active earthquake area. Each year, new hot springs and geysers appear while others become dormant. Geologic events trigger many of these changes. Even small earthquakes can alter hydrothermal behavior. This sudden activity is known as a “thermal disturbance” and can last a few days, or more than a week. Gradually, most features return to “normal.” No one fully understands why this happens. Norris has the greatest water chemistry diversity among Yellowstone’s hydrothermal areas. The water chemistry changes as the water levels of underground hot water reservoirs fluctuates. Although Norris is known for its acid features, it also have alkaline hot springs and geysers. As underground water and chemistry shift suddenly, they could contribute to dramatic changes in minerals and pH. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

Picnic area near the Roosevelt Arch and the North Entrance

Many of the park’s ungulates spend the winter in Yellowstone’s northern range. The area provides critical winter habitat for elk, bison, deer, and pronghorn. Elevations are lower and the area receives less snow than elsewhere in the park. Often the ridge tops and south-facing hillsides are clear of snow, a result of wind and sun. Managing Elk Populations Until the mid-1960s, park managers actively managed the elk and bison of Yellowstone. Elk population limits were determined according to formulas designed to manage livestock. When elk reached those limits, park managers “culled” or killed the animals to reduce the population. Bison were likewise heavily managed. Modern Management In 1963, an advisory group made of prominent scientists released a report recommending national parks “maintain biotic associations” within the context of their ecosystem based on scientific research. The recommendations, known as the Leopold Report, established the framework for park management still used today throughout the National Park System. By adopting this management philosophy, Yellowstone went from an unnatural managing of resources to “natural regulation”—today known as Ecological Process Management.

Abyss Pool is one of the deepest hot springs in the park, descending 53 feet (16 m). Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

Picnic area near the Albright Visitor Center in Mammoth Hot Springs

Anemone Geysers are two geysers at Upper Geyser Basin.

A large terrace along the Upper Terrace Drive that has seen periods of activity and inactivity.

Picnic Area near Yellowstone Lake

Picnic area between Mammoth Hot Springs and Norris, near Apollinaris Spring

Artemisia Geyser is a large thermal pool in the Upper Geyser Basin.

This trailhead provides access to the upper end of the Upper Geyser Basin. Parking is available across the street in the Biscuit Basin parking lot. Use caution when crossing the road.

This trailhead starts at the eastern end of the Artist Point parking area. The trail leads to the popular Artist Point Overlook. East of the overlook where you can embark on the following trails:- Artist Point-Point Sublime Trail- Clear Lake-Ribbon Lake TrailThere is a large parking lot here, though it is often busy during the peak of the summer season. Vault toilets are located at the western end of the parking lot. Artist Point-Point Sublime Trail This 2.6-mile (4.2-km) the

CLOSED

This is a one-mile (1.6 km) trail that enters a partially burned lodgepole pine forest, then winds across a wet meadow on a boardwalk. This trail is a short loop. The hydrothermal area has colorful hot springs, mudpots, and small geysers. Watch out for flying mud. Stay on the trail and boardwalks. AccessibilityThe trail is relatively flat from the parking lot to the hydrothermal features. The trail is over bare ground. There is a mixture of boardwalks and bare ground trails

A geyser in the Upper Geyser Basin.

This trailhead is located on the north side of the East Entrance Road and provides access to the following trail:- Avalanche Peak Trail Avalanche Peak Trail This trail is often snow-covered until early July. This strenuous, high elevation 4.4-mile (7.1-km) there-and-back trail is not recommended for people with heart and/or respiratory problems. Be aware of lightning above treeline. Even on warm summer days, bring rain gear, wool hats, and gloves. Burned trees may fall withou

Avoca Spring is a hydrothermal feature at Biscuit Basin.

Baby Daisy Geyser is a hydrothermal feature at Biscuit Basin.

Built in 1909 to house six single officers assigned to duty at Fort Yellowstone.

In contrast to Porcelain Basin, Back Basin is more forested and its features are more scattered and isolated. Young lodgepole pines growing up among the remains a fire the burned through the area in 1988. Color and Heat Lovers Hydrothermal features are also habitats in which microscopic organisms survive and thrive. They are called thermophiles: "thermo" for heat and "phile" for lover. Although they are too small to be seen with the naked eye, trillions are grouped together and appear as masses of color. They are nourished by energy and chemical building blocks. Colorless and yellow thermophiles grow in the hottest water. Orange, brown, and green thermophiles grow in cooler waters. Imagine living in near-boiling temperatures, in hydrothermal features with the alkalinity of baking soda, or in water so acidic that it can burn holes in clothing. Microorganisms in Yellowstone need these extremes to survive. Norris Geyser Basin Norris Geyser Basin is one of the hottest and most acidic of Yellowstone’s hydrothermal areas. It is outside of the most recent Yellowstone caldera, but inside the first and largest caldera. It sits on the intersection of three major faults and is a very active earthquake area. Each year, new hot springs and geysers appear while others become dormant. Geologic events trigger many of these changes. Even small earthquakes can alter hydrothermal behavior. This sudden activity is known as a “thermal disturbance” and can last a few days, or more than a week. Gradually, most features return to “normal.” No one fully understands why this happens. Norris has the greatest water chemistry diversity among Yellowstone’s hydrothermal areas. The water chemistry changes as the water levels of underground hot water reservoirs fluctuates. Although Norris is known for its acid features, it also have alkaline hot springs and geysers. As underground water and chemistry shift suddenly, they could contribute to dramatic changes in minerals and pH. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

The Bacon Rind trailhead is on the northwest side of Yellowstone near U.S. Highway 191. From this trailhead, you can embark on the following trail:- Bacon Rind Trail Bacon Rind Trail A strenuous 10.2-mile (16.4 km) there-and-back trail that climbs 2,400 feet (731 m) through forest (some burned in 2017) and meadow to high alpine meadows and views. CAUTION: Grizzly bears frequent this area. Backcountry RegulationsPermit required for fishing, boating, riding, and overnight cam

An historic hot spring along the Upper Terrace Drive in the Mammoth Hot Springs of Yellowstone National Park.

Bear spray is available for rent at the Bear Aware rental kiosk at the northwest corner of the visitor center plaza, 20 yards from the main entrance.

Bear spray is available for rent at the Yurt near the Yellowstone Tribal Heritage Center at Old Faithful.

Stop and listen. Bearclaw Geyser makes a gurgling noise while it erupts. Its eruptions are small, with water only bubbling a few inches up into the air. As with many geysers in the area, this geyser appears to be linked to the eruptions of Fountain Geyser. Geysers Geysers have constrictions in their plumbing systems that prevent water from moving freely to the surface where heat would escape. Water beneath the constrictions creates a buildup of steam. Eventually the steam pushes water past the constrictions and the geyser erupts. Fountain Paint Pot Area Hydrothermal features can be grouped into two general categories: those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike. All of these features occur in the Fountain Paint Pot area. Thermus aquaticus, the thermophile that revolutionized DNA replication processes, was discovered in this area. Lower Geyser Basin The Lower Geyser Basin sits on unstable glacial gravel on top of solid rock. The jarring energy of an earthquake can make the gravel vibrate and shift position, and compact or fracture. All these changes affect water supplies to hot springs. They might force muddy water to the surface, clouding existing pools or creating new ones. They might divert water from a pool, causing it to dry up. Water temperatures might also increase or decrease due to these subsurface changes. In the days after the Hebgen Lake earthquake of 1959, all of these changes were observed in various springs of the Firehole River geyser basins. The epicenter (point of origin) of the quake was determined to be about 31 air miles (50 km) northwest of the Fountain Paint Pots area. Great Fountain Geyser, on the Firehole Lake Drive, is the only geyser outside of the Old Faithful area with eruption forecasts. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

A thermal pool in the Upper Geyser Basin

Picnic area between Norris and Mammoth Hot Springs

This trailhead is located behind the Mammoth Hot Springs Hotel, next to the start of the Old Gardiner Road. From this trailhead, you can access the following trails:- Beaver Ponds Trail- Selpulchar Mountain TrailThere is no parking at the trailhead. However, there is parking available nearby around the visitor center, hotel, and other nearby facilities. Beaver Ponds Trail A 5-mile (8.3-km) loop trail that begins and ends in the developed area of Mammoth Hot Springs. This mode

2025 Season Open June 14 - October 13, 2025 (weather dependant; dates may change without notice). Backcountry Permits are available 8:00 am to 4:30 pm daily. For help during other times, call the Central Backcountry Office at 307-344-2160 Purchase fishing permits, entrance passes, Interagency Senior and Access passes, overnight backcountry camping permits, float tube permits, and non-fee horseback day riding permits. Trail, hiking, and horseback riding information Overnight Backcountry Camping Permits are required year-round for all overnight stays in Yellowstone's backcountry. A backcountry permit allows the permit holder and group members to camp in a designated backcountry location. Permits are not required for day hiking. Boat related backcountry permits can only be picked up at the Bridge Bay Ranger Station, Grant Backcountry Office, or Snake River Ranger Station. Backcountry Fees Recreation Fee: $5 per person, per night, plus a $10 reservation fee. Fees apply to all ages. The recreation fee is charged year-round, whether secured through Recreation.gov or in-person at a backcountry office. Boats & Float Tubes Boat Permits and Aquatic Invasive Species (AIS) Inspections are required for all boats and float tubes. Boating is not allowed on Yellowstone's rivers (this includes float tubes).Please view our boating regulations for further details. Boat permits and AIS inspections (motorized, non-motorized, and float tubes) can be acquired at the Lewis Lake Ranger Station, Grant Ranger Station, and Bridge Bay Ranger Station. Float tube permits and AIS Inspections are also available at the Bechler Ranger Station, Snake River Ranger Station, West Yellowstone Visitor Information Center, Mammoth Backcountry office (Located in the Albright Visitor Center), and Northeast Entrance Station. Backcountry Office Locations Albright Visitor Center (basement) Tower Ranger Station Bridge Bay Ranger Station Grant Village Visitor Center Snake River Ranger Station Bechler Ranger Station West Yellowstone Visitor Information Center Reservations Advanced reservations can be made online at Recreation.gov or in-person at one of the park's backcountry offices. Reservations must be converted into a permit, in person at a backcountry office no more than two days before the start of the trip. Detailed information on advanced reservations is available online.

This trailhead is located along the Cave Falls Road, just north of the southern park boundary. This trailhead provides access to the following trails:- Boundary Creek- Bechler River Cutoff Trail- Bechler River Trail- South Boundary Trail: Bechler Ranger Station-Grassy Lake- Robinson Creek Trail Boundary Creek Trail A moderate 17.2-mile (27.7-km) one-way trail that travels across relative flat lands, through forests and meadows, and past several waterfalls around the middle se

A cone geyser in the Upper Geyser Basin

This more remote trailhead can be access by car and provides access to the following trail. The trailhead is at a steep pullout on the north side of the road at the east end of the reservoir.- Beula Lake Trail Beula Lake Trail This is a 5.2-mile (-km) there-and-back trail with a gentle climb at the start of the trail. Beula Lake covers about 107 acres (43 ha) and supports a population of Yellowstone cutthroat trout. If you are looking to fish here, remember to pick up a Yell

This trailhead is located at the small picnic area/winter warming hut just after thr turn-off from the Grand Loop Road. This trailhead provides access to these trails:- Bighorn Pass Trail- Bighorn Loop Ski Trail- Indian Creek Loop Ski Trail- Sheepeater Ski TrailParking is available near the vault toilets. Winter access is available via a snowcoach ride from the Mammoth Hot Springs Hotel. Bighorn Pass Trail A strenuous 19.4-mile (31.2 km) one-way trail with lot of open meadows

The Bighorn Pass trailhead is on the northwest side of Yellowstone near U.S. Highway 191. From this trailhead, you can embark on the following trail:- Bighorn Pass Trail Bighorn Pass Trail This trail can either be a there and back 21.2-mile (35 km) strenuous hike to the top of Bighorn Pass or a 19-mile (30 km) through hike ending at a different trailhead south of Mammoth Hot Springs. (Either plan on leaving a vehicle at one end or arrange a shuttle back to the trailhead.) Th

Trailhead in the Old Faithful Area

The Black Butte trailhead is on the northwest side of Yellowstone near US Highway 191. From this trailhead, you can embark on the following trail:- Black Butte Trail Black Butte Trail This is a strenuous 11.4-miles (18.3 km) there-and-back trail that climbs 3,100 feet (945 m) to the Sky Rim Trail and near Big Horn Peak. CAUTION: Grizzly bears frequent this area. Backcountry RegulationsPermit required for fishing, boating, riding, and overnight camping. More information at t

Black Diamond Pool is a hydrothermal feature at Biscuit Basin.

In 1948, Black Dragon’s Caldron burst through a crack in the earth. It uprooted and coated nearby trees with thick mud. Since then, this mudpot moved south 200 feet (60 m) along the crack. The spring feeding nearby Sour Lake was much more active before Black Dragon’s Caldron formed. Perhaps underground changes diverted heat energy from Sour Lake to form this mudpot, which a park ranger named for its color and the apparent lashing of the “dragon’s tongue.” Mudpots Mudpots are acidic features with a limited water supply. Some microorganisms use hydrogen sulfide, which rises from deep within the earth, as an energy source. They help convert the gas to sulfuric acid, which breaks down rock to wet clay mud and creates the area’s smell. The pungent odor of rotten eggs is caused by the hydrogen sulfide gas. Various gases escape through the wet clay mud, causing it to bubble. Mudpot consistency and activity vary with the seasons and precipitation. The Smell Mudpots are acidic features with a limited water supply. Some microorganisms use hydrogen sulfide, which rises from deep within the earth, as an energy source. They help convert the gas to sulfuric acid, which breaks down rock to wet clay mud and creates the area’s smell. The pungent odor of rotten eggs is caused by the hydrogen sulfide gas. Various gases escape through the wet clay mud, causing it to bubble. Mudpot consistency and activity vary with the seasons and precipitation. Mud Volcano Area The Mud Volcano area has many mudpots and hillsides strewn with trees cooked by steam. The hydrothermal features here are some of the most acidic in the park. Mud Volcano is near the greatest uplift and sinking of the Yellowstone Caldera floor. Many faults converge here and earthquakes are common. The areas surrounding the Mud Volcano vent and the other major vent near Old Faithful are called resurgent domes. Resurgent domes are active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

Black Opal Pool is a hydrothermal feature at Biscuit Basin.

Black Pearl Geyser is a hydrothermal feature at Biscuit Basin.

Black Pool was named for the green and brown thermophiles living in the pool back when it was given this name. Since then, however, the temperature of the water has increased, and the types of thermophiles living in the pool has shifted to those more orange and yellow in color. Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

1 mile (1.6 km) walk to Black Sand Basin from Daisy Geyser or 1 mile (1.6 km) drive northwest of Old Faithful along the main road.Named for sand derived from black volcanic glass (obsidian), this basin features some of the most splendid hot springs in Yellowstone. Hydrothermal features here:- Emerald Pool- Rainbow Pool- Sunset Lake (actually a geyser, but its eruptions are infrequent and seldom noticed because of the heavy steam over the water)- Cliff Geyser, on the edge of I

A large, blue pool in the Upper Geyser Basin

The blacksmith shop was conveniently located near the horse stables in Fort Yellowstone.

This trailhead is located on the Grand Loop Road between Mammoth Hot Springs and Tower. From this trailhead, you can access the following trails:- Blacktail Deer Creek Trail- Blacktail Ponds Spur Trail- Rescue Creek Trail- Yellowstone River TrailParking at this trailhead can fill up quickly. There is additional parking nearby at the Blacktail Deer Creek Stock Trailhead. Blacktail Deer Creek Trail From the Blacktail Deer Creek trailhead it is moderate 11-mile (18-km) there-and

Blood Geyser is a geyser with an average temperate of 196.7°F (91.5°C), an average pH of 8.5, and an average conductivity of 2100 uS/cm. Blood Geyser has steady activity, perpetually spouting from a pool about 13x10 feet (4x3 m) in size. It is a distinct orange-red color with abundant sinter surrounding the pool. Grass grows around the perimeter. Blood Geyser is set in a hillside and has runoff channel to the north. Geysers Geysers have constrictions in their plumbing systems that prevent water from moving freely to the surface where heat would escape. Water beneath the constrictions creates a buildup of steam. Eventually the steam pushes water past the constrictions and the geyser erupts. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

Similar to Black Pool, Blue Funnel Spring hints at the dynamic nature of thermal areas. It was once a blue pool, but changes in the area have caused the pool's temperature to drop, and then actually drain from the system. Hot Springs Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below. This circulation prevents water from reaching the temperature needed to set off an eruption. Use Caution in Hydrothermal Areas Stay on boardwalks and designated trails. Hydrothermal water can severely burn you. Never run, push, or shove. Supervise children at all times. Do not scratch hydrothermal mats. You are responsible for your safety. Think safety, act safely. Yellowstone is a dangerous place.

A clear, deep, blue hydrothermal pool in the Upper Geyser Basin

A long hike from the Grand Canyon of the Yellowstone and up the east side of Mount Washburn.

Starting at the Dunravenn Pass Trailhead you ascend Mount Washburn on a trail with spectacular views. The Mount Washburn Trail and trailhead parking lot at Dunraven Pass will close for improvements August 6-27, 2019.

Head up the shortest route to the top of Mount Washburn where you can enjoy panoramic views and interpretive exhibits.

Climb gradually through aspens and meadows, then descend through forests to sagebrush flats that lead to a footbridge across the Gardner River.

Hike through forest to the crystal-clear waters of the Lewis River Channel. Look for eagles and osprey fishing for trout in the shallow waters.

Enjoy a hike to one of Yellowstone's most spectacular waterfalls.

Hike up to an overlook of Grand Prismatic Spring.

Hike through open meadows to Cascade Lake where wildflowers abound and wildlife is often seen.

The Snow Pass Ski Trail is a 4.2 mile (6.76 km), skier-tracked, one-way, easiest to most-difficult, ski that takes skiers through a steep heavily forested area to a semi-flat wide open area with views of Swan Lake Flats.

Hike up to a ridge for magnificent views of Slough Creek Valley and the Absaroka Range.

A loop trail leads you by turbulent pools of hot, muddy water; hillsides strewn with trees cooked by steam; strange odors; and a bizarre landscape—welcome to the Mud Volcano area.

Hike along an old fire road through meadows and forest, some of which burned in 1988.

Old Faithful Geyser is the world's best known geyser. Its eruption intervals have varied from 40 to 126 minutes. Find out the eruption times of Old Faithful and other large geysers at the Old Faithful Visitor Education Center, following the @GeyserNPS twitter feed, or using the Geysers app.

Descend to the brink of the Lower Falls on this steep trail to catch a glimpse of one of Yellowstone's greatest wonders.

Follow a stagecoach route on a meadow journey around Garnet Hill. The full route cannot be hiked due to a trail washout refer to Backcountry Conditions report.

Hike through forests, meadows, and a river valley—all of which are some of the best grizzly bear country in the lower 48 states.

Follow this self-guided trail along a boardwalk that winds through the grassland of Yellowstone's northern range.

The Riverside Ski Trail provides several easy options to ski along the Madison River and enjoy views of both the Gallatin and Madison mountain ranges.

The Bannock Ski Trail is a 2 mile (3.2 km) easy ski that follows the old road bed that once used to supply the mining town of Cooke City, Montana.

The Observation Point Loop Snowshoe Trail is a 2.0 mile (3.2 km) snowshoe only trail that treats visitors to unobstructed views of the Upper Geyser Basin and the Firehole River.

The Tower Fall Ski Trail is a 5.0 mile (8 km) round-trip easiest trail that allows skiers to enjoy canyon views of the Yellowstone River and Tower Fall.

The Sheepeater Ski Trail is a skier-tracked, easy, one-way 5 mile (8 km) trail that provides scenic views of Swan Lake Flats.

The Roller Coaster Ski Trail is a more difficult 1.8 mile (2.9 km) roundtrip forested trail taking skiers on a rolling course with several steep drop-offs.

The Old Canyon Bridge Ski Trail is a flat 1 mile (1.6 km) easiest ski that provides skiers a short but beautiful way to see the Yellowstone River in winter.

The North Rim Ski Trail is a 3.0 (7.24 km), easiest to more difficult forested trail that takes skiers along the North Canyon Rim providing views into the Grand Canyon of the Yellowstone.

The Mallard Lake Ski Trail is a 6.8 mile (10.9 km) round-trip, skier-tracked, more difficult trail taking skiers on a steep climb to views of Mallard Lake.

The Lost Lake Ski Trail is a 4 mile (6.4 km) easiest to more difficult one-way trail that takes skiers by Petrified Tree, Lost Lake, and Calcite Springs Overlook.

The Fawn Pass Ski Trail is an 11 mile (17.7 km), one-way, more difficult ski trail that provides skiers with wide open views of the Gallatin Range.

The Fairy Falls Ski Trail is a 10 mile (16 km) (with ski drop) skier-tracked, round-trip, easiest to more dificult ski that provides icy views of one of Yellowstone's most popular waterfalls.

The Chittenden Loop Ski Trail is an easiest to more difficult 5.3 mile (8.3 km) loop providing views of Mount Washburn on clear days.

The Canyon Rim Ski Trail is a 4.5 mile (7.24 km), easiest to more difficult forested trail that takes skiers along the Canyon Rim providing views into the Grand Canyon of the Yellowstone.

The Blacktail Plateau Ski Trail is an easiest to more difficult 8 mile (12.8 km) one-way ski with two trailhead options. This trail travels open meadows and forests with great wildlife viewing opportunities in winter.

The Barronette Trail is an easy 3.5 mile (5.6 km) one-way section of the Old Cooke City road and winds through conifer forest.

Just inside the park's West Entrance, bicyclists can travel on the Riverside trail located just north of and paralleling the main Grand Loop Road. This trail gives access to a section of the Madison River. This is a fairly level trail and mountain bikes are recommended.

The old roadbed near the lakeshore between Lake Hotel and where the roadbed joins the main road south of Lake Junction (1 mile) has a great views of the Yellowstone Lake.

The paved trail in front of Old Faithful Lodge runs all the way to Morning Glory Pool. Take this short, (2 mi. round-trip) fairly level, paved-path and make stops to see geysers.

The Natural Bridge bike trail is 2.5 mi (4km) round-trip ride and begins just south of the Bridge Bay marina off the Grand Loop Road.

The trailhead for Lone Star Geyser is east of Kepler Cascades pull-out, 3.5 miles (5.6 km) southeast of Old Faithful overpass on Grand Loop Road.

An abandoned railroad bed located near the north entrance of Yellowstone makes a beautiful bike trail.

The Bunsen Peak Loop is a ten mi (16 km) bike trail that circles Bunsen Peak.

Norris Geyser Basin is one of the hottest and most acidic of Yellowstone’s hydrothermal areas. It is part of one of the world’s largest active volcanoes. Many hot springs and fumaroles here have temperatures above the boiling point (200ºF / 93ºC).

Look out across the Grand Canyon of the Yellowstone or take in the beauty of the Yellowstone River and its waterfalls.

Explore the four major types of hydrothermal features along this short, popular, boardwalk trail.

From 1886 to 1918, the US Army managed Yellowstone National Park. Starting in 1890, the US Army constructed Fort Yellowstone as a more permanent base of operations.

Follow the rim of the Yellowstone River valley, enjoying views of bighorn sheep, the Narrows of the Yellowstone, Overhanging Cliff, and the towers of Tower Falls.

Hike to a high mountain meadow for a commanding view of the West Thumb of Yellowstone Lake and the distant Absaroka Mountains.

Cross sagebrush meadows, marshland, and mixed conifer forest to the base of Wraith Falls on Lupine Creek.

Stroll through a geyser basin of colorful hot springs and dormant lakeshore geysers situated on the scenic shores of Yellowstone Lake.

Enjoy a short hill climb through Douglas-fir forest to Trout Lake.

Pass by Indian Pond and through a forest to the shores of Yellowstone Lake. Along the way, look for marmots in the rocky area near Storm Point.