Cape Krusenstern National Monument and the colocated Cape Krusenstern Archeological District is a U.S. National Monument and a National Historic Landmark centered on Cape Krusenstern in northwestern Alaska.
Founded on December 1, 1978, it is made up mainly of a coastal plain, containing large lagoons and rolling hills of limestone. The bluffs record thousands of years of change in the shorelines of the Chukchi Sea, as well as evidence of some 9,000 years of human habitation.
The archeological district comprises 114 ancient beach ridges which formed approximately 60 years apart. They provide a rare sequential look at over 5000 years of inhabitation.