Coso Hot Springs
Coso Hot Springs surges from the earth at an extreme 207°F (97°C) within the Coso Volcanic Field, representing one of California's hottest thermal systems. The spring emerges 144 degrees above the ambient mountain temperature, one of the state's most dramatic thermal anomalies.
The springs lie deep within a high-altitude landscape at 4,280 feet elevation, set within volcanic terrain shaped by intense geothermal activity. The extremely acidic water (pH 1.5) with high iron and sulfate content creates distinctive chemical pools and mineral deposits typical of advanced geothermal systems.
This spring system is completely inaccessible to the public, located on the Naval Air Weapons Station China Lake military installation. Its extreme temperature, acidic chemistry, and restricted status make it a purely scientific and historical point of interest rather than a recreational destination.
The complex sits within the Coso Volcanic Field and is listed on the National Register of Historic Places. Geologically, it represents a major geothermal resource zone where hot springs discharge from active volcanic rock and mineral-rich thermal aquifers beneath the Mojave Desert.
The water at Coso Hot Springs is strongly acidic (pH 1.5) with 2500 mg/L total dissolved solids. It is notably rich in magnesium (known for muscle relaxation and stress relief), sulfate (traditionally used for skin conditions and inflammation), and iron (iron-rich springs may support circulation).
Some links are affiliate links. We may earn a commission at no extra cost to you.
Chimney Creek Campground is located within Chimney Peak Recreation Area and is cherry stemmed out of Owens Peak Wilderness. The campground contains 36 sites and is nestled among beautiful pinyon pines, grey pines, and oaks along Chimney Creek at 5,700 feet in elevation. Each site in the campground has a picnic table and fire ring. Potable water is available during the summer months near the very end of the campground loop at site 36. During the summer, days can be warm and dry. The Pacific C...
Coso Hot Springs is road-accessible, so you can bring more gear. The water is dangerously hot — bring water shoes and test pools carefully.
As an Amazon Associate, we earn from qualifying purchases.
Springs Near Coso Hot Springs
More Springs Around 207°F
Strongly Acidic Springs (pH ~1.5)
Hike 6 waterfalls near Coso Hot Springs
Looking for more outdoor adventures? Explore waterfall hikes near Coso Hot Springs, California.