USGS geologist Kristi Wallace at tephra station 15AUKLW006, near Ursus Head, examining ash-fall layers from Augustine Volcano. Photograph from geology field work at Augustine, August 2015.
Image courtesy of AVO/USGS.
Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.
To obtain a high-resolution image, open the full size
page. Then, right click on the image and click
"Save Image As..." or "Save Picture as..."