In square compound on south side of footpath across arable land 400 yards east of Glendace Sike (B6401) and 200 yards north of The Pikin Stanes (name of minor road).
LOCKED All surface features remain intact with some flaking of the green paint. A metal dome on the ventilation shaft indicates this was a master post. The hatch is locked.
Opened in 1961 and closed in 1991.