After being locked out for 3 years we regained access in 2011, only to find the bunker had been flooded. There didn’t appear to be too much damage initially but then the mould, rot and fungus set in. At this point we were locked out again.
Close up of fungus bottom left window below curved viewing window in plotting room. 
Mould and fungus on walls on lower level. 
Rot to wooden frame of water tank, lower level. 
Fungus and mold on lower level walls. 
Mould in viewing rooms above plotting room.