Global Volcanism Program | Image GVP-05335

The 4.5-km-wide Ugashik caldera formed during the late Pleistocene. Five Holocene lava domes are in the caldera, seen here from the east with Upper Ugashik Lake in the background. Photo by Betsy Yount (Alaska Volcano Observatory, U.S. Geological Survey).

The 4.5-km-wide Ugashik caldera formed during the late Pleistocene. Five Holocene lava domes are in the caldera, seen here from the east with Upper Ugashik Lake in the background.

Photo by Betsy Yount (Alaska Volcano Observatory, U.S. Geological Survey).

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Galleries: Calderas

Keywords: caldera | lava dome

Ugashik-Peulik