Visited this one last weekend. easy to find walk up the beach look for telegraph poles in dunes. Partly unearthed the access shaft has been cut short subbrit shows it capped with concrete but that has now gone just a metal plate with 3 or 4 bolts securing it(big spanner required). Looking a bit sad for itself however it gives us an insight into how the posts were built. Anyway the photo's.
Vent shaft filled with concrete
Look out for this tell tale sign
Rob....
Vent shaft filled with concrete
Look out for this tell tale sign
Rob....