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Global Volcanism Program | Image GVP-03304

Curved cooling joints in the Bishop Tuff deposit form a dramatic pattern in the Owens River Gorge of the Long Valley caldera.  Eruption of 500 cu km of material about 760,000 years ago resulted in collapse of the 17 x 32 km caldera. Photo by Larry Mastin, 1992 (U.S. Geological Survey).

Curved cooling joints in the Bishop Tuff deposit form a dramatic pattern in the Owens River Gorge of the Long Valley caldera. Eruption of 500 cu km of material about 760,000 years ago resulted in collapse of the 17 x 32 km caldera.

Photo by Larry Mastin, 1992 (U.S. Geological Survey).


Long Valley