National park, northwestern Alaska, U.S. Located north of the Arctic Circle, it was made a national monument in 1978 and a national park in 1980.
Occupying an area of 1,750,421 acres (708,370 hectares), it preserves the Kobuk River valley, including the Kobuk and Salmon rivers, forest lands, and the Great Kobuk Sand Dunes. Archaeological sites reveal more than 10,000 years of human habitation. It protects caribou migration routes; other wildlife include grizzly and black bears, foxes, moose, and wolves.