Gates of the Arctic National Park and Preserve
Gates of the Arctic was initially designated as a national monument on December 1, 1978, before being made into a national park and preserve upon passage of the Alaska National Interest Lands Conservation Act in 1980. A large part of the park has additional protection as the Gates of the Arctic Wilderness which covers . The wilderness area adjoins the Noatak Wilderness. Together, they form the largest contiguous wilderness in the United States.