• Aerial view of Aniakchak Caldera taken from northern rim


    National Monument & Preserve Alaska

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Did You Know?

Did You Know?

Aniakchak Caldera is six miles (10 kilometers) across and 3,000 feet (1000 meters) deep. Created by a volcanic eruption approximately 3,500 years ago, the caldera resulted from the collapse of a 7,000 foot mountain.