Monument record OTY 041 - Otley Auxiliary unit operational base

Otley Auxiliary unit operational base.
The OB is situated near the edge of a cultivated field, about 325 metres to the north of the B1079 Road through Otley Bottom, about 400 metres to the south of a minor road to the north and about 120 metres from a public footpath (as the crow flies). In the 1940s this part of the field was covered by scrubby woodland.
The OB’s main chamber was a 14ft long underground Nissen hut with a drop down entrance shaft lined with corrugated sheeting in a timber frame, and an emergency escape exit passage leading out the other end.
There was a toilet cubicle near the emergency exit.
Both end walls of the main chamber were constructed from corrugated sheeting held in place by a timber frame.
Both entrance and exit have collapsed. The unglazed ceramic field pipes used for ventilation have disappeared but shards are occasionally being ploughed up in the field surrounding the structure (S2).