The small hummocks (hills) in this photo formed during a 1956 eruption of Bezymianny, an eruption that resembled the 1980 eruption of Mount St. Helens. The hummocky terrain is reminiscent of the debris avalanche deposit filling the Toutle River at St. Helens, and likewise was produced by a massive volcanic landslide when Bezymianny collapsed on 30 March 1956. The hummocks consist of material from the edifice that traveled out to 18 km E.

Photo by Dan Miller (U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Galleries: Debris Avalanches / Landslides

Keywords: debris avalanche deposit | deposit | hummock | field work

Bezymianny