Fossil Falls

Fossil Falls is an archaeological site and waterfall in California's Coso Range, where dark basalt formations create a deep chasm with water-polished surfaces. The river carved through the volcanic rock over thousands of years, revealing layers of ancient lava flows.

Volcanic activity from the Coso Volcanic Field and Red Hill occurred between 400,000 and 10,000 years ago, creating the basalt formations seen today. These lava flows shaped the landscape and later provided obsidian sources for people who lived in the region.

The Coso people and other Native American groups made their camps near these waters to gather food and craft tools from obsidian deposits found nearby. The falls served as a gathering place where people worked and lived seasonally, leaving traces of their presence still visible today.

The site is located about 36 miles northwest of Ridgecrest and offers a small campground with water, restrooms, and picnic facilities. Wear sturdy shoes since the basalt surfaces are uneven and can be slippery, especially near water.

The smooth, rounded potholes dotting the basalt surfaces were carved by spinning granite stones trapped in swirling water eddies during ancient glacial runoff. These holes reveal the patient grinding power of water over thousands of years.

Location: California

GPS coordinates: 35.96995,-117.90896

Latest update: December 7, 2025 20:40