Thule Air Base

Thule Air Base, or Thule Air Base / Pituffik Airport (IATA: THU, ICAO: BGTL), is the United States Air Force's northernmost base, located 1,207 km (750 mi) north of the Arctic Circle and 1,524 km (947 mi) from the North Pole on the northwest side of the island of Greenland.

Thule Air Base is the US Armed Forces' northernmost installation, located 750 miles north of the Arctic Circle. Thule's arctic environment includes icebergs in North Star Bay, two islands (Saunders Island and Wolstenholme Island) a polar ice sheet, and Wolstenholme Fjord - the only place on Earth where four active glaciers join together.

Thule Air Base is home to the 21st Space Wing's global network of sensors providing missile warning, space surveillance and space control to North American Aerospace Defense Command (NORAD) and Air Force Space Command (AFSPC).

Thule Air Base has served as the regional hub for nearby installations, including Cape Atholl (LORAN station), Camp Century (Ice Cap Camp), Camp TUTO (Ice Cap Approach Ramp and Airstrip), Sites 1 and 2 (Ice Cap Radar Stations), P-Mountain (radar and communications site), J-Site (BMEWS), North and South Mountains (research sites), and a research rocket firing site. It also was essential in the construction and resupply of High Arctic weather stations, including CFS Alert (Alert Airport) and Station Nord.

Thule is home to the northernmost deep water port in the world. Thule is the only Air Force Base with an assigned tugboat. The tugboat is used to assist ship movements in the harbor during the summer, and is hauled onto shore during the winter season. The tugboat is also used for daily sightseeing tours of Northstar Bay during the summer. Additionally, for a fee, there is a Danish tour boat that runs in the summer.