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).
This image is made available as a Public Domain Work, but proper attribution is appreciated.