Deb Bergfeld (USGS Menlo Park) prepares to sample a fumarole on Okmok's Cone C. Okmok's caldera wall and flank of Cone F are seen in the background.
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.
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..."