Titan I OSTF-8
Air Force Base: Vandenberg
Latitude: 34 48.2578333333333
Longitude: -120 32.7725
This was a Operational Suitability Test Facility for Titan I.
The reason this silo opening has no doors is due to an explosion in the 60's. Part of the debris is still visible in this image, although it blends well with the ground after all of these years. The specific launch was, I believe, on December 3, 1960.