'Amatignak Island' is a member of the
Delarof Islands (west of the
Andreanof Islands), in
Alaska's
Aleutian archipelago. The south-most point of Alaska and the highest western
longitude of the
United States are on this island, at 179 06' 31W, 51 15' 33"N.
The island is about 8 km (5 mi) long north-to-south, and about 4 km (3 mi) wide east-to-west. The nearest island is
Ulak Island about 6 km (4 mi) to the northwest.