Image via Wikidata
Mud Volcano discharges at 131 degrees Fahrenheit just 11 meters from Grand Loop Road at 7,744 feet elevation, providing immediate roadside access to acidic thermal activity. The water runs 97 degrees above the 34.2-degree ambient temperature in terrain receiving 125 inches of annual snow.
The feature sits in forested terrain where thermal activity has created barren ground and acid-killed trees. The site occupies the Mud Volcano thermal area east of Yellowstone Lake, named for vigorous mud pot and fumarole activity. The accessible location along the main park loop attracts heavy visitor traffic.
History of Mud Volcano
The site gained recognition from early park explorers, with accounts documenting violent hydrothermal explosions in the 1870s that reshaped the thermal basin. The feature's dramatic activity and roadside location made it a signature attraction, remaining under permanent National Park Service protection with minimal infrastructure beyond parking and boardwalks.
Visit year-round with winter access depending on road plowing. Boardwalks provide close viewing of thermal features with interpretive signage. Tower Fall Campground, 29.6 kilometers away, offers the nearest established camping. Arrive early morning or late afternoon in summer to avoid peak crowds at this popular roadside stop.
Is Mud Volcano worth visiting?
Best for
- Hot spring soaking
- Easy day trips
- Overnight camping trips
- Winter soaking with dramatic temperature contrast
Mud Volcano offers an accessible hot spring experience — great for a day trip.
Annual Precip: 25.9 in
Annual Snow: 125.5 in
December
Air 14°F · Water 131°F · +117° contrast
January
Air 15°F · Water 131°F · +116° contrast
February
Air 17°F · Water 131°F · +114° contrast
December offers 45°F more contrast than July
Overview
Tower Fall Campground—elevation 6,600 feet (2012 m)—is on the north side of the steep, winding, road to Dunraven Pass. The campground is near the Tower General Store and Tower Fall. The Lamar Valley, with spectacular wildlife viewing opportunities, is nearby as are several Day Hikes in the Tower and Northeast Area. Roosevelt Lodge, a short drive from the campground, offers dining and horseback riding.
For reservations at the campgrounds managed by Yellowstone National Park Lodges (F...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Warm layers
Cold air before and after soaking
Camping gear
Nearby camping at Tower Fall Campground
Trash bag
Pack out what you pack in
Water shoes
Hot ground near source
19 miles from West Yellowstone, WY
USGS Quad: CANYON VILLAGE 15 · PP 492: 61.0 · Circ 790: 215.0 · NOAA: 62.0 · AMS Map: ASHTON
What is the water temperature at Mud Volcano?
Mud Volcano has a water temperature of 131°F (55°C). This is considered a hot spring, well above body temperature.
Where is Mud Volcano located?
Mud Volcano is located in Gallatin County, Wyoming at 7,744 feet elevation, near West Yellowstone. Coordinates: 44.6250°N, 110.4330°W.
How do I get to Mud Volcano?
Mud Volcano has Roadside road access, with the nearest road being Grand Loop Road (37 ft from the road).
Is Mud Volcano free to visit?
Mud Volcano has Open access. It is managed by National Park Service.
Can I camp near Mud Volcano?
Yes, Tower Fall Campground is located nearby (18.4 miles away).
Is it safe to soak at Mud Volcano?
At 131°F, Mud Volcano is hot enough to require caution. Enter slowly, limit soaking sessions to 15–20 minutes, and stay hydrated. Always tell someone your plans before visiting remote hot springs.
Is Mud Volcano crowded?
Mud Volcano is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Mud Volcano?
Essentials for Mud Volcano: swimsuit, towel, water bottle, warm layers for before and after soaking, camping gear, a trash bag to pack out what you pack in. The water is over 110°F — test the temperature before entering and watch for scalding near the source.