Global Volcanism Program | Image GVP-08967
This September 1946 photo of Great Sitkin from the E rim of the summit crater shows a plume rising above a lava dome emplaced in the crater in March 1945. The fissures in the ice were produced as the dome grew through the summit glacier.
Photo courtesy of U.S. Geological Survey (published in USGS Bulletin 1028-B).
This image is made available as a Public Domain Work, but proper attribution is appreciated.