Snow-covered Knutson Lake (lower left) lies within a 1.5 x 2 km wide crater of Mount Dana. Dana is a small volcano consisting of a central dome complex surrounded by a fan of volcaniclastic debris. Lava domes are along the western crater rim and inside the crater east of Knutson Lake. A major eruption about 3,840 radiocarbon years ago produced a block-and-ash flow that filled valleys south and west of the crater.

Photo courtesy of U.S. Geological Survey, Alaska Volcano Observatory, 1973.

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Keywords: crater | crater lake

Dana