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Wrangell Volcano, USA
Alaska's Mount Wrangell is one of the most voluminous andesitic shield volcanoes in the world and is more than three times the volume of Mount Rainier.
The massive volcano has a diameter of 30 km at 2000 m elevation and a volume of about 900 cu km.
Eruption of unusually fluid andesitic lavas at high eruption rates produced long lava flows that contributed to its low-angle shield morphology.
The small snow-covered peak on the left is Mount Zanetti, a flank vent about the same volume as St. Helens.
Wrangell is seen here from Glenallen, 80 km to the west.
PHOTO SOURCE: Chris Nye, Alaska division of Geological Geophysical Surveys, courtesy of the Global Volcanism Program, Smithsonian National Museum of Natural History, used with permission.
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