Aniakchak
National Monument and Preserve
Aniakchak
National Monument and Preserve
The Aniakchak Caldera, covering some 10 square miles, is one of the great dry calderas in the world. Located in the volcanically active Aleutian Mountains, the Aniakchak last erupted in 1911. The crater includes lava flows. cinder cones, and explosion pits, as well as Surprise Lake, source of the Aniakchak River, which cascades through a 1,500-foot gash in the crater wall. The site contains the Aniakchak Wild River.
NO FEDERAL FACILITIES.
Proclaimed as Aniakchak National Monument Dec. 1, 1978; established as a national monument and preserve Dec. 2, 1980.
Acreage-
National monument: 117,176, all federal.
National Preserve: 465,603 Federal: 454,151
Nonfederal: 11,452
View maps of the preserve at the NPS Alaska Geospatial Data Clearinghouse!