Under the Trummerberg, which also had a Golf-Ball on top, was a bunker system.
A pal of mine an RAF Flight Sgt was one of many RAF Interpreters(Russian) working there on 24/7 shifts.
He eventuallyt ended up as a civvy at GCHQ.
My question is - were the guys at the Trummerberg on the books of RAF Gatow or RAF Electronic Intelligence via a small station in the East of England which still exists so mustn't mention it?