Monument Geyser Basin
Monument Geyser Basin emerges at 197 degrees Fahrenheit at 7,320 feet elevation, requiring a 650-meter uphill hike from Grand Loop Road. Recent USGS analysis measured 90.7 degrees Celsius with high sodium (407 mg/L) and chloride (562 mg/L) concentrations. The water runs 164 degrees above ambient.
The basin occupies a steep thermal hillside above the Gibbon River where annual snowfall reaches 123 inches and precipitation totals nearly 26 inches. Cone-shaped sinter deposits give the area its name, with weathered thermal features scattered across the slope in lodgepole pine forest.
The basin gained recognition from early Yellowstone explorers documenting the park's thermal features. The eroded cones represent dormant or dying geysers, with the area seeing minimal human development beyond trail construction. The site remains in permanent protection under National Park Service management.
Hike between June and September when snow clears the moderately strenuous uphill trail. Elevation gain and uneven footing require fitness and appropriate footwear. Indian Creek Campground, 22.6 kilometers away, provides the nearest base camp. Allow two hours round-trip from the trailhead.
Is Monument Geyser Basin worth visiting?
Best for
- Observing powerful hot springs
- Overnight camping trips
- Winter soaking with dramatic temperature contrast
Not ideal for
- Casual soaking
The water at Monument Geyser Basin is slightly acidic (pH 6.7). 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...