• Aerial view of Aniakchak Caldera taken from northern rim


    National Monument & Preserve Alaska

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Did You Know?

Did You Know?

The Aniakchak (Big) River drops more than 1,000 feet in elevation within the first 15 miles leaving the caldera. The final 12 miles of the 27 mile river is a smooth, winding float along the open tundra. Watch for bears, moose, and other wildlife as you float.