Jim Vallance (USGS-CVO) is working on ash layers from Akutan volcano at an outcrop site on Unalga island. This island is a relatively flat bit of land in between Akutan and Makushin volcanoes in the eastern Aleutian islands.
Credit: Image courtesy of the AVO/UAF-GI.
Use Restriction: Please cite the photographer and the Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image. Full Resolution.