Tuff canyon. This steep-sided gorge has been formed by the downward erosion of lava deposits by a river which ran through the dried up bed in the vall

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Tuff canyon. This steep-sided gorge has been formed by the downward erosion of lava deposits by a river which ran through the dried up bed in the valley bottom. The landscape of tuff or tuffstone was formed by the accumulation and compaction of volcanic ash following a volcanic eruption. Photographed in Big Bend National Park, Texas, USA.

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Size: 3591px × 5386px
Photo credit: © BOB GIBBONS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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