Entrance to the Cold War era Nike Missile Battery.
A Nike anti-aircraft missile site - one of eleven Nike batteries built in the Bay Area during the Cold War, just behind Point Blunt.
The battery had three launching sections, each one with four missile launchers. Nike-Ajax missiles - liquid-fueled missiles carrying TNT warheads - had a range of approximately 40 miles.
The launching sections each had an underground magazine that could hold up to a dozen missiles. The missiles were raised to the surface by hydraulic elevators, then placed on the launchers.
The top of Mt. Livermore, the highest point on the island, was flattened for radar equipment to guide the missiles.
The missiles became obsolete in 1962, and the battery was abandoned. This area is off limits to visitors.