Janet Schaefer (AVO/DGGS) and Jim Vallance (USGS) examine tephra deposits from Makushin in a peat-rich outcrop. This outcrop is located in a cirque, high above Driftwood Valley. Janet used a folding extension ladder to obtain good descriptions and samples.
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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