HotPrimitive

Casa Diablo Hot Pool

CA165°F

About Casa Diablo Hot Pool

Casa Diablo Hot Pool offers a raw, invigorating experience amid California’s rugged volcanic landscape. This primitive hot spring features steaming geothermal waters heated to around 165°F, inviting you to immerse yourself in its naturally heated pools surrounded by stark, rocky terrain.

Getting There

Reaching Casa Diablo requires a drive along rough dirt roads near Mammoth Lakes, making high-clearance vehicles preferable. Limited parking is available near the site, and a short, unmarked walk brings you to the steaming pools nestled against the desert-like backdrop.

What to Expect

The hot spring’s water is intensely warm, so be prepared for a gradual adjustment as you soak. The atmosphere is peaceful but exposed, reflecting the untamed spirit of California’s hot springs. Facilities are nonexistent, emphasizing an authentic encounter with nature over comfort or convenience.

Tips for Visitors

Visit during the cooler months for a more comfortable soak and avoid the hottest midday sun. Bring plenty of water to stay hydrated and sturdy footwear for the rocky approach. Keep in mind there are no fees or staff, so practice Leave No Trace and respect the fragile environment around this wild California swimming hole.

Last updated December 20, 2025

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