In a small rectangular compound on Stockley Hill, 500 yards North of an un-named minor road. On the East side of a bridleway beside trig. station.
LOCKED All surface features remain intact with some flaking of the khaki paint. A metal dome on the ventilation shaft indicates this was a master post. The hatch is locked.
September 2009 Reported by PD that has been Open for at least four years
Opened in 1961 and closed in 1991.