Herbert Island
Herbert Island (; ) is an island in the Islands of Four Mountains subgroup of the Aleutian archipelago. It is from Chuginadak Island, separated by the Chuginadak Pass. Yunaska Island is west southwest of Herbert Island. Measuring across, Herbert Island is somewhat circular in shape and is covered by the Herbert Volcano, whose wide caldera is one of the largest in the Aleutian Islands. There have been no recorded eruptions here. The island is long and wide.