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).

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).

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Keywords: stratovolcano

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