Location of the Katmai Volcanic Cluster on the Alaska Peninsula. Map modified from Adleman, Jennifer, 2002, The great eruption of 1912: National Park Service Alaska Park Science Winter 2002, Anchorage, AK, http://www.arlis.org/docs/vol1/52558645/52558645v1no1.pdf , p. 4-11.
Credit: Image courtesy of AVO/USGS.