Looking into Aniakchak Caldera across the dark tephra cone produced during the May - June 1931 eruption, one of the largest eruptions in Alaska in the last 100 years. In the bottom of the cone is a moss-dappled lava and spatter field produced during the last stages of eruption.  Read more about this dramatic eruption, colorfully documented by Father Bernard Hubbard, here http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Aniakchak&eruptionid=293&page=basic
In the distance is the exposed wall of Half Cone, (another site of explosive activity) and the turquoise Surprise Lake.

Looking into Aniakchak Caldera across the dark tephra cone produced during the May - June 1931 eruption, one of the largest eruptions in Alaska in the last 100 years. In the bottom of the cone is a moss-dappled lava and spatter field produced during the last stages of eruption. Read more about this dramatic eruption, colorfully documented by Father Bernard Hubbard, here http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Aniakchak&eruptionid=293&page=basic In the distance is the exposed wall of Half Cone, (another site of explosive activity) and the turquoise Surprise Lake.

Date: Jul 11th, 2002
Volcano(es): Aniakchak
Photographer: Plucinski, T. A.
URL: avo.alaska.edu/image/view/18768
Credit: Image courtesy of AVO/USGS.
Use Restriction: Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.
Full Resolution.