• Aerial view of Aniakchak Caldera taken from northern rim

    Aniakchak

    National Monument & Preserve Alaska

Things To Do

Aniakchak National Monument and Preserve encompasses 586,000 acres of pristine Alaska wilderness. While rafting the Aniakchak River, hiking the caldera floor, and sport fishing are among the most common activities pursued, the possibilities for adventure are limitless for those visitors determined and prepared enough to experience Aniakchak on its own terms.

Did You Know?

Did You Know?

The outlet of the Aniakchak River, referred to as "The Gates," was formed when water within the caldera breached the rim and carved through the wall. Terrace deposits above the current water level of Surprise Lake indicate that the lake once filled 50 percent more of the caldera.