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Long Valley Caldera, CA

US Forest Service

Long Valley Caldera

During a gigantic eruption about 760,000 years ago, an area bordered by what is now Mammoth Mountain, the Glass Mountains and Crowley Lake (approximately 12 miles wide by 18 miles long), collapsed to ...[more]

Address

CA

Directions

The long valley Caldera is the massive, depressed area with Mammoth Lakes to the West, Crowley Lake to the Southeast and the Glass Mountains to the North.

Activities
  • HIKING HIKING
  • INTERPRETIVE PROGRAMS INTERPRETIVE PROGRAMS
  • PICNICKING PICNICKING
  • WILDLIFE VIEWING WILDLIFE VIEWING
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