Photos from 2003 before the guard house building was badly damaged by fire.
The mound behind the house holds a two storey ROTOR R2 bunker built in 1951, and destroyed by fire in 1958. The underground areas reached through the red door in the floor are flooded and contaminated with asbestos.
Some more photos showing the badly damaged guard house in late 2007
Update Feb 2009 :
Geoff Pallett has kindly provided me with a picture of the site taken in the early 60’s, he can be contacted directly at GEOFFREY.M3UXB@GMAIL.COM, there is also much discussion of the site in the comments section.