Photo taken during the helicopter observation flight on 20 Sept, 06 between 19:40 and 20:30 local time. Looking South. Both plumes are visible with one of those individual "Puff" coming of the lower right hand corner of the photo.
Image courtesy of the AVO/UAF-GI.
Please cite the photographer and the Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image.
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