10) You are now standing within the main protected area of the R1 structure, perhaps secure against a 20kt 'near miss' weapon although originally built only to withstand attack with Russian 1000lb freefall bombs. The walls surrounding you are 14 ft steel reinforced concrete of the highest quality (in ALL directions). When active this area would have had a 'pleasant, air conditioned atmosphere' - with both fallout and gas protection. (Photo copyright Nick Catford 1999)

The AC plant and construction design was capable of withstanding external temperatures of hundreds of degrees for several hours, with little variation in internal conditions. Walk through into the Main Operations Room corridor

 
Where am I?.....10) Jump to map! For an Emergency Exit!..
Copyright Mark.A.Bennett @ Subterranea Britannica 2000