The Tejon Ranch
The Northrop facility is known as "The Tejon Ranch" and is sometimes referred to as "The Tehachapi Ranch" by UFO researchers.
It is located in the foothills of the Tehachapi mountains, at the mouth of Little Oak Canyon about 25 miles northwest of Lancaster, California. It is not under restricted airspace. Although the public is told that this is a cattle ranch, no livestock are visible anywhere on the property. UFO researcher Bill Hamilton says that if asked, Northrop Corporation will say that this is an "electromagnetic research facility."
There are large radar or microwave dishes and strange looking pylons to which objects can be fixed, for the purpose of beaming electromagnetic radiation at them. These pylons rise up from underground out of diamond-shaped openings in the middle of long, paved surfaces that resemble aircraft runways, but which are not used by any type of aircraft for landing or take-off.
It is thought that this facility goes down as many as 42 levels, and that tunnels link it to other nearby underground installations in the area.