On open pasture 200 yards East of Pickets Heath Farm and radio masts. 150 yards West of public footpath running North from Ridgeway.
OPEN When inspected in 1998 all surface features were intact with the green paint in good condition and the hatch was locked. A metal dome on the ventilation shaft indicates this was a master post. In 2006 the post has deteriorated with some damage to the concrete around the hatch which is now open. The site is now overgrown. Internally some artefacts remain including the battery switching box and copper earth straps.
Jan / Feb 2012 - Now welded shut
Opened in 1960 and closed in 1991.
