NE of Tigalda I., in Krenitzin Islands., Aleutian Islands.
Aleut name transcribed by Captain Tebenkov (1852, map 26), Imperial Russian Navy (IRN), as "O(strov) Kaligagan" or "Kaligagan Island."
Tigalda Bay, Ugamak Bay, Welcome Bay,
Capes:Agaagilag-ukux, Angaakix, Qatunaaglux, Unimguukux,
Channels:Islands:Aiktak Island, Botinski Island, Kaligagan Island, Round Island, Tigalda Island, Ugamak Island,