On a high mound in the south west corner of a field, 150 yards north of a minor road.
SEALED There has been some quarrying around the post exposing the access shaft down to the top of the monitoring room. The hatch is missing and the shaft has been capped with concrete. There is however a gaping hole in the shaft large enough for a small person to get in. The post appears to be dry inside. The concrete apron around the access shaft has largely gone and both ventilation shafts have been reduced to stumps.
Closed in 1968
