On the left of the corridor is the air conditioning plant room. This would have humidified the incoming filtered air and acted as a heat exchanger. All the equipment has been removed from this part of the building but the supporting structure remains. Pipes for carrying the cooling water can still be seen but nothing else remains other than the main supporting structure. The source of the bed spring isn’t known but 
there was the odd piece of evidence of people using this outer chamber for ‘amusement’ in the days before it was finally sealed again. It certainly doesn’t fit the description of a standard pattern RAF bed.
The foul air extracted from the bunker would pass through this room and on via ducting to the surface. Above, the ducts have been covered by concrete slabs but these are now becoming unstable and, from above, a long drop into the start of the ducts offers yet another danger for the unwary. As can be seen in the photograph, parts of the earth cover are also showing signs of subsidence at the edge of the duct and the once level slabs are now uneven. as a result.
