Atka Island (Aleut: Atx̂ax̂) is the largest island in the Andreanof Islands of the Aleutian Islands of Alaska. The island is 50 miles (80 km) east of Adak Island. It is 65 miles (105 km) long and 2–20 miles (3–30 km) wide with a land area of 404.6 square miles (1,048 km²), making it the 22nd largest island in the United States. The northeast of Atka Island contains the Korovin volcano which reaches a peak of 5,030 feet (1,533 m).