Aerial-view of the caldera of Mount Aniakchak from the west
The Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska, United States.
The area was proclaimed a United States National Monument on December 1, 1978 and established as a National Monument and Preserve on December 2, 1980. The area is maintained by the National Park Service.
The Aniakchak region is part of the Pacific Ring of Fire, and the national monument consists of the caldera around Mount Aniakchak, with notable examples of several volcanic features - such as lava flows and cinder cones. Surprise Lake , located within the caldera, is the source of the Aniakchak River, a National Wild River .
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