Hiking & Backpacking
While there are no formal trails within Aniakchak National Monument & Preserve, hikers and backpackers will find excellent hiking conditions atop the ash and cinder fields of the caldera floor.
Because the Aniakchak landscape also features swift, cold rivers and seemingly impenetrable patches of dense vegetation, the path of least resistance will often be an animal trail. Be sure to make noise as you walk in these conditions to warn wildlife of your approach.
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.