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The peninsula is 0.3 miles (483 m) wide and 0.25 miles (402 m) long, with an elevation from 80 to 180 ft (24 to 55 m). It is connected to the coast by a narrow isthmus on the northeastern side, with Pillar Point Bluff, a county park, almost perpendicular to it. In the 19th century, the land where Pillar Point Air Force Station now resides was part of Rancho Corral de Tierra. It was given to Francisco Guerrero y Palomares by Mexico before California became a US state in 1850. The area was used for farming and grassland pasture until World War II. Just north of the base was Half Moon Bay Flight Strip, an auxiliary airfield for Salinas Army Air Base training used during the war. The Half Moon Bay Flight Strip is now Eddie Andreini Sr. Airfield. There is a prehistoric artifact site, CA-SMA-151, at the station, which is listed on the National Register of Historic Places.
Pillar Point (top) and Half Moon Bay, looking north, 2009
Aerial view of Pillar Point Harbor looking east. The 1967 breakwater extension is at the center right; the 1982 inner breakwater is at the upper left
Boats in front of the Pillar Point Air Force Station in the Pillar Point Harbor, 2012
U.S. Radar, Operational Characteristics of Radar Classified by Tactical Application, FTP 217, Prepared by Authority of the Joint Chiefs of Staff, by the Radar Research and Development Sub-Committee of the Joint Committee on New Weapons and Equipment, 1 Aug 1943, Washington, D.C.