The oval, snow-covered northern peninsula of Atka Island, a cluster of severely eroded stratovolcanoes and caldera, is part of the Aleutian chain known as the Central Aleutian Islands. Korovin Volcano, near the northern edge of the island, has the highest elevation on the island [5030 feet (1533 meters)] and the most eruptive activity. Elongated, east-west-oriented Amlia Island to the east rises only 2100 feet (640 meters) at its highest elevation.