Long Valley Volcano Hazards

Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain. The valley is one of the Earth's largest calderas, measuring about 20 miles long, 11 miles wide, and up to 3,000 feet deep.
  • Location: Mono County, California · United States
  • Floor elevation: 6,500–8,500 ft (2,000–2,600 m)
  • Length: 20 mi (32 km) EW
  • Width: 11 mi (18 km)
  • Depth: up to 3,000 ft (900 m)
  • Age: 760,000 yrs
  • Type: Caldera

Nearby

Data from: en.wikipedia.org