USGS/AVO geologist Matt Loewen samples a pleistocene-aged lava flow at station 18MLSH045 on the south flank of Shishaldin as part of Shishaldin geology fieldwork, August 2018.
Image courtesy of the AVO/ADGGS.
Please cite the photographer and the Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys when using this image. Full Resolution.