On bailey (lower mound) of Castlehaw Motte & Bailey castle mound (Scheduled ancient monument). 120 yards North of A683.
SEALED All surface features have been removed and the access shaft capped with four concrete slabs that are bolted into place. The slabs are resting on 3 iron bars cemented in place. The ladder has been removed and the monitoring room filled with soil and rubble although not up to the roof. January 2016: The shaft its filled with rubble leaving about a 12 inch gap to the roof. a description of the ROC post has now been placed at the base os the bailey on which the post sits.
Opened in 1965 and closed in 1968.