Big Mountain Air Force Station (IATA: BMX, ICAO: PABM, FAA LID: 37AK) is a military use airstrip located near Big Mountain, in the Lake and Peninsula Borough of the U.S. state of Alaska.[1] The airstrip was built to support the Big Mountain Radio Relay Station, an abandoned Air Force facility located 220 miles (350 km) southwest of Anchorage on the south shore of Iliamna Lake.[2]