High Rock Spring
High Rock Spring emerges at 86°F in northeastern California's high desert, positioned at 4,040 feet elevation near Janesville. Running 32°F warmer than the local air, this modest thermal feature sits in open sagebrush and juniper landscape typical of the Great Basin transition zone.
The spring rises from high desert terrain characterized by sparse vegetation and expansive views. Juniper and sagebrush surround the approach, with the water warmed pleasantly against the cool mountain air. The landscape stretches wide and open—this is the relatively warm, accessible side of the Cascades.
High Rock Spring emerges from geological transitions between the Great Basin and Sierra Nevada provinces. The moderate thermal output reflects deep crustal heat rising through fractured basement rock. This area marks a boundary zone where different geothermal regimes meet.
Expect a 196-meter walk from the nearest road to reach the spring. Winter brings substantial snowfall—28 inches annually—so plan accordingly. The high desert climate remains dry overall, with only 13 inches of precipitation yearly. Check local access conditions before your visit.
Is High Rock Spring worth visiting?
Best for
- Warm-water soaking
- Overnight camping trips
Overview Black Mountain Lookout remained closed for the 2020 season and is expected to remain closed into 2021. Closure is due to COVID related demands in maintaining a safe environment for our customers and our staff. Black Mountain Lookout is located on the eastern edge of the Beckwourth Ranger District, 10 miles from Highway 395, near Milford, California. The lookout was constructed in 1934 and is a great example of Civilian Conservation Corps (CCC) architecture. The C-3-type lookout is si...