Aniakchak National Monument and Preserve

  • Teal waters of Surprise Lake



Aniakchak Information

Don't let the remote location keep you from visiting Aniakchak, a vibrant reminder of Alaska's location in the volcanically active 'Ring of Fire.'

Aniakchak National Monument and Preserve is home to an impressive six-mile wide, 2,500 ft. deep caldera formed during a massive eruption 3,500 years ago. The Aniakchak Caldera, is the result of a series of eruptions, the latest in 1931. Covering some ten square miles, it is one of the finest examples of dry caldera in the world. Located in the volcanically active Aleutian Mountains, the crater contains many outstanding examples of volcanic features, including lava flows, cinder cones, and explosion pits.

Surprise Lake, located within the caldera, is the source of the Aniakchak River, which cascades through a 1,500-foot gash in the caldera wall. The site also contains the Aniakchak Wild River.

Making an Impact

Visiting Aniakchak

Map of the Park

Aniakchak National Monument and Preserve
#1 King Salmon Mall P.O. Box 7
King Salmon , AK

Parks Near Aniakchak National Monument and Preserve

Rafters on the Alagnak Wild River
Whitewater rafting in Class I-III rapids, kayaking, fishing, and floating are some of the activities enjoyed by adventure-seekers on vacation in Alaska.
Bears at Katmai Park
Katmai National Park and Preserve in Alaska is home to spectacular and unique volcanoes, and wildlife including fish, flowers, and bears.
Lake Clark
See the spectacular scenery of mountains, glaciers and volcanoes that stretch from the shores of Cook Inlet to the tundra-covered hills.
Beautiful waters at Kenai Fjords
Experience the glacial hiking trails at Kenai Fjords National Park, where this rugged landscape promises a life-changing experience for visitors.
From the Blog

From the Blog

Support Our Parks
The protection of our national parks is a job we can all do. Our parks need the support of people like you who love and visit them.