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Volcanoes of Unimak Island, Alaska, USA

November 1st, 2010 Category: Mountains, Volcanoes

USA - September 12th, 2010

This orthorectified image focuses on Unimak Island, one of the Aleutian Islands in Alaska. Numerous volcanic features can be observed on the island.

Situated at the left edge are the Pogromni Volcano and the Mount Westdahl stratovolcano. Pogromni is old and eroded, and historic eruptions attributed to it may have come from nearby Westdahl volcano.

Moving eastward across a low crater, one comes to the peak of Mount Shishaldin, a moderately active volcano. It is the tallest volcano in the Aleutian Islands. The most symmetrical cone-shaped glacier-clad large mountain on earth, the volcano’s topographic contour lines are nearly perfect circles above 6,500 feet.

Continuing eastward, one finds the Isanotski Peaks or Isanotski Volcano, a multipeaked mountain. It is an old, highly dissected stratovolcano, lying about 10 miles (16 km) east of Shishaldin Volcano, the highest peak in the Aleutian Islands. Its height is also often given as 8,025 feet (2446 m). In contrast to many of the younger, symmetrical volcanoes of the region, Isanotski is topped by multiple rugged pinnacles.

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