Picture 1
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4. Promontory Fort.
Another feature recently identified was a small Promontory fort. A mere 30m at its widest point; it is triangular in shape with a 20m high cliff on two sides and on its landward side there is the remains of a substantial wall with the suggestion of a surrounding fosse and outer wall.
taken from "THE CAVAN BURREN Illustrated Guide 2006" by Gaby Burns