• Aerial view of Aniakchak Caldera taken from northern rim

    Aniakchak

    National Monument & Preserve Alaska

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  • All Open Fires Prohibited in Katmai NP&P, Alagnak Wild River, and Aniakchak NM&P

    Effective immediately, Katmai National Park and Preserve, Alagnak Wild River, and Aniakchak National Monument and Preserve are prohibiting the use of all open fires in the park and preserves due to high fire danger. More »

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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.