Unnamed Thermal Spring
This 97-degree thermal spring sits at 8,159 feet elevation within Inyo National Forest, running an extraordinary 56.7 degrees above the frigid ambient air that averages just 40.3 degrees annually. Among California's hottest thermal springs, this location combines extreme elevation with extreme thermal heating, creating a remarkable high-country thermal experience.
The spring emerges through forests of whitebark pine and mountain hemlock at an exceptionally high elevation where summer lasts only briefly. Steaming thermal water rises from rocky ground amid dense alpine vegetation, surrounded by views of snow-capped peaks. The 535-meter walk to the spring passes through pristine high-country forest largely untouched by development.
The spring requires a 535-meter walk from vehicle access through potentially snow-covered terrain, making winter visits extremely challenging or impossible. Summer and early fall offer the only practical access windows. Bring warm layers despite the hot spring water, as wind chill and thin alpine air create rapid heat loss. Altitude acclimatization may be necessary at 8,159 feet.
The spring flows on U.S. Forest Service land within Inyo National Forest, where multiple-use management balances recreation and resource extraction. The exceptional temperature results from proximity to active geothermal systems in this volcanically active region where the Long Valley Caldera system extends eastward beneath Mono Basin.
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Overview The outstanding lake and mountain views at Oh Ridge Campground make it a favorite spot for both families and anglers. It sits in the eastern Sierra Nevada Mountains in close proximity to the Ansel Adams Wilderness, Yosemite National Park and Mono Lake. The nearby town of June Lake offers the convenience of shopping and dining, while the surrounding land and lakes provide ample outdoor recreation opportunities.Recreation Oh Ridge campers have no problem staying busy and enjoying the o...
At 8,159 feet, this spring is in high-altitude territory where the air is noticeably thinner. Soaking in hot water accelerates dehydration and can amplify altitude effects like headache and fatigue. UV radiation is roughly 33% stronger here — wear sunscreen even on overcast days and take breaks from the water to rehydrate.
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this spring is road-accessible, so you can bring more gear. Cold air temperatures make a changing robe or warm layers essential.
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