Long Valley Caldera
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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 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.
View from northeast rim of caldera
Early winter in Long Valley, 2017
Layers of the Bishop tuff, in a rock quarry in Chalfant Valley, about 25 km (16 mi) southwest of the Long Valley Caldera, laid down in phases of a major eruption 760,000 years ago.
Hot Creek Fish Hatchery at base of Resurgent Dome
Mammoth Mountain
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Mammoth Mountain is a lava dome complex partially located within the town of Mammoth Lakes, California, in the Inyo National Forest of Madera and Mono Counties. It is home to a large ski area primarily on the Mono County side.
Mammoth Mountain from the south, with Ritter Range behind
Overabundance of carbon dioxide in the soil from a natural underground volcanic source has killed a large area of trees
Ski runs