Aniakchak National Monument & Preserve

A lone raft floats the Aniakchak Wild River as it flows through the "Gates"
Given its remote location and challenging weather conditions, Aniakchak is one of the most wild and least visited places in the National Park System. This landscape is a vibrant reminder of Alaska's location in the volcanically active "Ring of Fire," as it is home to an impressive six mile (10 km) wide, 2,500 ft (762 m) deep caldera formed during a massive volcanic eruption 3,500 years ago.
Map showing location of park.
Aniakchak Caldera
Input Needed for Aniakchak Fire Management Plan
You are invited to review and provide input on the Alaska Region Coastal Park Units Fire Management Plan Environmental Assessment by July 21, 2024.
A lone raft floats the Aniakchak Wild River as it flows through the "Gates"
Photo by NPS Photo/Troy Hamon
Aerial shot of Aniakchak Caldera
Photo by NPS Photo/Roy Wood
Black Nose, Aniakchak Caldera
Photo by NPS Photo/Roy Wood
Maar Lake, Aniakchak Caldera
Photo by NPS Photo/Roy Wood
The Gates of Aniakchak
Photo by NPS Photo/Roy Wood