Tags: Volcano.
Fisher Caldera also known as Mount Fisher and Fisher Volcano is a large volcanic caldera measuring about 6.8 miles (11 km) by 11 miles (18 km) located on Unimak Island in the Aleutian Islands of Alaska. Formed by the destructive eruption of an andesitic stratovolcano about 9100 years ago it contains three crater lakes one 2 miles (3.2 km) wide and two others about 1.5 miles (2.4 km) wide. Small peaks rising 2000 feet (600 m) and 2031 feet (619 m) are also present in the caldera.