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The Three Sisters Volcano Cluster in Oregon, USA – May 15th, 2010

44.1N 121.7W

May 15th, 2010 Category: Image of the day, Mountains, Volcanoes

USA - April 28th, 2010

USA - April 28th, 2010

The cluster of volcanoes in the upper half of this orthorectified image are known as the Three Sisters. They are three volcanic peaks of the Cascade Volcanic Arc and the Cascade Range in Oregon, each of which exceeds 10,000 ft (3,048 m) in elevation.

The volcanoes have the third, fourth, and fifth highest peaks in the state of Oregon and are located in the Three Sisters Wilderness, about 15 mi (24 km) southwest from the nearest town of Sisters, Oregon. The three peaks have 15 named glaciers among them, nearly half of all the 35 named glaciers in Oregon.

The Three Sisters are the centerpiece of a region of closely grouped volcanic peaks which form an exception to the typical 40-mile (64 km) to 60-mile (97 km) spacing between volcanoes elsewhere in the Cascades. Nearby peaks include Belknap Crater, Broken Top and Mount Bachelor, with Three Fingered Jack and Mount Washington somewhat to the north.

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