Which US national park is located entirely within the Arctic Circle and is the northernmost?

Gates of the Arctic National Park is the US national park located entirely north of the Arctic Circle and is the country’s northernmost national park.

The park lies in northern Alaska across the Brooks Range, a rugged chain of mountains cut by glacier-carved valleys and wild rivers. It has no established roads, trails, campgrounds, or ordinary visitor facilities, making it one of the most remote units in the US National Park System. Access is generally by aircraft, river, or extended backcountry travel.

Gates of the Arctic was first protected as a national monument in 1978 and became a national park and preserve in 1980 under the Alaska National Interest Lands Conservation Act. The combined park and preserve covers more than 8.4 million acres, while most of it also receives additional wilderness protection.

Kobuk Valley National Park is another remote Alaskan park and is also north of the Arctic Circle, which makes it an understandable distractor. However, Gates of the Arctic is the one entirely north of the circle and holds the northernmost-national-park distinction.