between Great Sitkin and Umak Islands., one of Andreanof Islands., Aleutian Islands.
Aleut name published by Captain Tebenkov (1852, map 28), Imperial Russian Navy (IRN), as "O(strov) Tagadakh", or "Tagadakh Island." According to R. H. Geoghegan, this Aleut word means "fresh" or "new."
Aankuuga, Agamaxchizalix, Alugasux, Azamis Cove, Chalux, Chigulam Udaa, Chisak Bay, Chuhngudugis, Daa Agidgix, Hanisxa, Igitkin Bight, Iiqiisix, Liisis Tatuu, Naagix Adimtusix, Nahmagix, Nguugix Iilamiizax, Piper Cove, Qagaagix Chalux, Qahnichxucha, Qigaagix Adimtusix, Qigaangax, Round Cove, Saamlus, Sand Bay, Scripps Bay, Shelter Cove, Tana Bight, Ugiilagaadax, Ulgusix, Umak Bight, Uuhmugzux, Yoke Bay,
Aalux, Agony Point, Bugle Point, Cape Agumsadak, Cape Akuyan, Cape Azamis, Cape Chakik, Cape Chisak, Cape Kiugilak, Cape Lises, Cape Ruin, Cape Umak, Elbow Point, Igitkin Point, Iqalax, Kingfisher Point, Knaxchiing, Kyugaadax, Moss Point, Narrows Point, Passage Point, Qatxayas Yaaga, Reach Point, Rip Point, Saddle Point, Sulphur Point, Swallow Head, Tanagam Amaga, Tanager Point, Uchixsax, Zaliva Point,
Amgasis, Anagaksik Island, Asuksak Island, Atangax, Aziak Island, Box Island, Chisak Island, Chugul Island, Great Sitkin Island, Igitkin Island, Kanu Island, Little Tanaga Island, Rip Rock, Tagadak Island, Tanaklak Island, Tanax Angunax, Teapot Rock, Ulak Island, Umak Island,