From Miller and others (1998) 
: "Kagamil volcano occupies most of the southern half of Kagamil Island, 55 km west of Umnak Island in the eastern Aleutian arc. The volcano consists of two cones and has an oval shape, 3.5 by 2 km in basal dimensions, with the long axis trending northwest-southeast. The larger cone at the southeastern end of the volcano has an elevation of 893 m; the cone at the northwestern end is about 610 m high and appears to have two small summit craters. Hot springs and fumaroles occur near the southeastern shore of the island 
"Both cones appear to be virtually undissected by erosion, indicating a post-glacial age. The cones rise from a more gently sloping surface with mean elevation of about 200 m."