3 mi. E of Little Kiska I. and 7.5 mi. E of South Head on Kiska I., Aleutian Islands.
Aleut name reported by Captain Lutke (1836, p. 327), Imperial Russian Navy (IRN), as "Tannadakh Ile" and published by Captain Tebenkov (1852, map 29) as "O(strov) Tanadakh" or "Tanadakh Island." According to R. H. Geoghegan the name means "eternal ground or burial place" from Tanadakuq;-literal meaning is "he dies or he goes to his eternal ground."