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Aniakchak National Monument and Preserve, Alaska

The Aniakchak Caldera, is the result of a series of eruptions, the latest in 1931. Nearly six miles in diameter and 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.

View of the caldera and Surprise Lake

National Park Service

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National monuments, ()
, Conservation of natural resources, ()
, Volcanos, ()
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Aniakchak National Monument and Preserve, Code: ANIA

Aniakchak National Monument and Preserve, Lake and Peninsula Borough, Alaska
Latitude: 56.8650016784668, Longitude: -157.720993041992

Legacy NPS Focus Record ID : 231467

NPS Office of Communications and Public Affairs Photo Library

Title: NPS Office of Communications and Public Affairs Photo Library
URL: http://www.nps.gov/pub_aff/imagebase.html

12/04/2003

01/01/1980 - 12/30/1999

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Aniakchak National Monument and Preserve

Administrator

Wednesday, September 29, 2004 6:26:08 PM

Wednesday, August 9, 2017 9:25:53 PM

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Monday, January 1, 0001 12:00:00 AM

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