A lone raft floats the Aniakchak Wild River as it flows through the "Gates"
A lone raft floats the Aniakchak Wild River as it flows through the "Gates" NPS Photo/Troy Hamon

Aniakchak National Monument & Preserve

National Monument · Alaska · National Park Service

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.

Plan your visit

Know before you go

Phone
9072463305
Official site
www.nps.gov
Managed by
National Park Service

Getting there

Directions on Google Maps →

What's here

Highlights: Archeology · Animals · Arctic · Tundra · Geothermal · Mountains · Volcanoes · Wilderness

Activities & features: Camping · Backcountry Camping · Climbing · Mountain Climbing · Flying · Hiking · Backcountry Hiking · Paddling · Whitewater Rafting · Wildlife Watching · Birdwatching

Photos

  • Aerial shot of Aniakchak Caldera
    NPS Photo/Roy Wood
  • Black Nose, Aniakchak Caldera
    NPS Photo/Roy Wood
  • Maar Lake, Aniakchak Caldera
    NPS Photo/Roy Wood
  • The Gates of Aniakchak
    NPS Photo/Roy Wood

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Sources: National Park Service · updated 2026-08-12