Global Volcanism Program | Image GVP-02667
A plume rises from the degassing Augustine summit lava dome during its 1986 eruption. This June 1986 view from the NW shows ashfall and pyroclastic flow deposits covering the upper flanks, which would normally be partially covered with snow fields at this time of year.
Photo by Lee Siebert, 1986 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.