This 1992 view up the eastern flank of Westdahl was taken two months after the end of a major E-flank eruption. The dark lava flows are from the 1991-92 eruption. The eruption took place from an 8-km-long fissure that extended from the summit down the east flank. It began on 29 November 1991 with a 6-km-high ash plume. The lava flow traveled as far as 7 km from the vent, widening as it reached the lower flanks.

Photo by C. Dau, 1992 (U.S. Fish and Wildlife Service, courtesy of Alaska Volcano Observatory).

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

Keywords: eruption | lava flow

Westdahl