It is the easternmost island in the Aleutians and, with an area of , the
9th largest island in the United States and the
134th largest island in the world. It is home to
Mount Shishaldin, one of the ten most active
volcanoes in the world. According to the
United States Census Bureau, 64 people were living on Unimak as of the
2000 census, all of them in the city of
False Pass at the eastern end of the island.
Cape Lutke is a headland on the island.
Cape Pankof is located at the extreme southwest of the island. The
Fisher Caldera is a
volcanic crater in the west-central part of Unimak. Some characteristics include many
volcanic cones and undrained
lakes. It is named for Bernard Fisher, a
U.S. Geological Survey geologist who was killed in
Umnak Pass.
Mount Westdahl, in elevation, is a
stratovolcano of the
Aleutian Range on the island situated at its western end. ==Natural history==