Horseshoe Spring
Horseshoe Spring erupts at 187 degrees Fahrenheit within Yellowstone National Park, producing superheated water with a pH of 3.6. The thermal feature sits 902.1 meters from Grand Loop Road at 7,480 feet elevation, accessible via a short walk. Recent USGS measurements recorded 87 degrees Celsius and extremely high chloride levels at 532 milligrams per liter, reflecting deep geothermal circulation.
The spring lies within Yellowstone's vast volcanic caldera in Gallatin County, Montana (park records use this designation despite Wyoming location). The 7,480-foot elevation places it in lodgepole pine forest that receives 27.4 inches of precipitation annually, including 136.7 inches of snow. The thermal basin displays characteristic Yellowstone features: mineralized runoff channels, thermophilic bacterial mats, and bare ground scoured by acidic water. Electric Peak rises to the north, part of the Gallatin Range, while the surrounding plateau extends southward toward Norris Geyser Basin. The harsh chemical environment prevents vegetation growth immediately around the spring.
Winter access is extremely limited due to road closures and dangerous snow conditions; the area receives over 11 feet of snow annually. Summer and early fall offer the best visiting windows, though afternoon thunderstorms are common. Stay on designated trails and boardwalks—the acidic water causes severe chemical burns. Use Indian Creek Campground 17.2 kilometers north as a base; reservations required. Bring layers for the 7,400-foot elevation where temperatures average 35 degrees Fahrenheit annually and can drop below freezing any month of the year.
The name likely refers to the spring's curved outline or surrounding deposit formation. Yellowstone's thermal features were cataloged extensively during the Hayden Survey of 1871-1878, though specific documentation for this individual spring remains limited. The area became part of the world's first national park in 1872, ensuring permanent protection. Modern USGS geochemical monitoring documents the spring's extreme chemistry, contributing to understanding of the park's hydrothermal system.
The water at Horseshoe Spring is acidic (pH 3.6). It is notably rich in sodium (supports circulation and skin hydration) and chloride (natural antiseptic with skin health benefits).
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Overview Located about eight miles (13 km) south of Mammoth Hot Springs on the road to Norris, Indian Creek Campground—elevation 7,300 feet (2225 m)—sits near the base of the Gallatin Mountains and offers breathtaking views of Electric Peak. The area offers easy access to fishing and hiking. The campground is away from the main road and provides a quieter, more primitive, experience than many other locations. For reservations at the campgrounds managed by Yellowstone National Park Lodges (Fi...
Horseshoe Spring sits at 7,480 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 30% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Horseshoe Spring is road-accessible, so you can bring more gear. The water is dangerously hot — bring water shoes and test pools carefully. Cold air temperatures make a changing robe or warm layers essential.
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