Natural and Man-made Points of Interest in the United States of America
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Landmark: Earth
Lake and Peninsula County Landmarks
Aniakchak Crater
Lake and Peninsula County
Alaska
Aniakchak is an extant volcano. The caldera formed during a major eruption in 1645 B.C. The most recent eruption was in 1931. Surprise Lake within the caldera is the source of the Aniakchak River, a National Wild River.