Skip to main content
U.S. flag

An official website of the United States government

East-facing slope of Mammoth Mountain, CA.

Detailed Description

View is from the south edge of the resurgent dome (CASA instrument site) looking toward the west. Mammoth Mountain rises steeply above the Town of Mammoth Lakes (buildings in center). The jagged peaks to the right of Mammoth Mountain are the Minarets of the Sierra Nevada. The road (Route 203) that leads to the Town of Mammoth Lakes from Highway 395 cuts across two separate basalt lava flows that were erupted onto the south caldera floor sometime between 152,000 and 64,000 years ago.


Public Domain.