Unalaska is an island of the Fox Islands in the middle of the Aleutian Islands, south-west of Alaska in the United States. The island is 2721 km ² ( 1051 square miles) in size. In the northeast, the Bering Sea facing side of the island is the town of Unalaska, which has spread to a large extent on the harbor island of Amaknak.
1759 housed the islands of Unalaska and Amaknak 24 settlements with more than 1,000 Aleut inhabitants. The Aleutian Islands or Unangan live on the island of Unalaska for thousands of years. The Russian fur trade reached Unalaska when Stepan Glotov landed with its crew on 1 August 1759.
On June 3, 1942 during the Second World War, Unalaska was attacked by the Japanese armed forces. Almost all the locals were sent for the duration of the war to Southeast Alaska.
The Bay of Unalaska empties into the Aktuan Pass, where the small island Unalga is the island bounded on the northeast and. In the south, the narrow Umnak Pass separates the island of Umnak Island. Against this pass is about 80 km southwest of Unalaska away, also on the side facing the Bering Sea, the small town at the foot of Mount Chernofski Aspird ( 654 m).
The largest peak on the island is the volcano Makushin with 2036 m above sea level.
On 8 December 2004, the Malaysian cargo ship selendang Ayu broke before Unalaska and caused by the spilled heavy fuel oil an oil spill.