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Global Volcanism Program | Image GVP-04043

The broad flat-topped summit of Santa Ana volcano is truncated by a 1.5-km-wide crater seen here from the south.  A series of bedded phreatomagmatic tephra layers exposed in the crater wall in this photo mantle the summit region and overlie lava flows exposed lower in the crater walls.   Copyrighted photo by Dick Stoiber, 1966 (Dartmouth College).

The broad flat-topped summit of Santa Ana volcano is truncated by a 1.5-km-wide crater seen here from the south. A series of bedded phreatomagmatic tephra layers exposed in the crater wall in this photo mantle the summit region and overlie lava flows exposed lower in the crater walls.

Copyrighted photo by Dick Stoiber, 1966 (Dartmouth College).


Santa Ana