The Culver Hole

The Culver Hole is a masonry structure approximately 20 meters tall, built across a natural cave. There is possible evidence of associated quarrying that may have been done to improve sea access or to make land access more difficult. The wall is about 3 meters thick at the base and narrows as it rises. It features axe-dressed limestone masonry with five surviving door or window openings arranged vertically along the incline of the cave. The lowest opening, located about 4 meters above the beach, is approximately 1.5 meters high and has a segmental stone arch, allowing it to function as a doorway. Above this, there is a smaller and narrower opening of a similar shape, followed by a circular opening with a diameter of about 1 meter. Another circular opening is located at a high level where the natural cleft of the rock expands, and part of a top opening remains with a straight edge and part of its segmental head. The top of the structure is missing.

Inside, the wall features a narrow staircase with three irregular flights near the base, as well as about 30 tiers of nesting boxes arranged like a dovecote.