MacKenney cone, the historically active vent of Pacaya volcano in Guatemala, was constructed within a horseshoe-shaped crater produced by collapse of the summit of an ancestral volcano about 1,100 years ago. The SW crater rim forms the steep-sided scarp at the right. The blocky hill in the foreground is a hummock from the debris avalanche produced by the collapse. The avalanche extended for 25 km.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Galleries: Debris Avalanches / Landslides

Keywords: debris avalanche deposit | deposit | hummock

Pacaya