On a mound on the east side of the A10, 30 feet from the cliff edge
LOCKED All surface features remain intact with the green paint flaking. The hatch is locked although it is not held firmly down. A metal dome on the ventilation shaft indicates this was a master post. Unusually the concrete apron around the access shaft is also painted green. A disused telegraph pole still stands alongside. For a time the post was used by the IOM coastguard to store pyrotechnics but it is no longer used for this purpose.
Opened in 1968 and closed in 1991.