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(2)Entrance to the tunnel and the stove (foreground) lifted away from the trapdoor giving access to the vertical shaft; bedboards used for shoring up the tunnel, and sections of air pipe (bottom left) ; ‘sausage bags’ made from long underpants (bottom right) used for bringing sand to the surface, and a lookout or ‘stooge’ (standing in doorway) one of several covering all approaches to guard against discovery by Germans on patrol. In the event of a German approaching the room, it could be ‘normalized’ in less than two minutes.