Description
On Semisopochnoi Island, Rat Is., Aleutian Is., 3 mi NE of Mount Cerberus, at the NE edge of the caldera. 1.7 miles long.
History
Named in 1950 by R. .R. Coats of the U.S. Geological Survey (USGS) for Clarence Norman Fenner, 1870-1949, authority on Alaskan geology.