Global Volcanism Program | Image GVP-01575
The double-peaked Hasan Dagi volcano in central Turkey has a complex history that includes three episodes of caldera collapse. Numerous cones, maars, and lava flows dot the flanks of the volcano. The hilly terrain in the foreground is a debris avalanche deposit produced by collapse of the volcano.
Photo by Richard Waitt, 1994 (U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.