A coastal defence artillery fort, constructed 1853-7, set within ramparts of an earlier promontory enclosure (Nprn95060): currently field studies centre.

Associated (later) defensive features:
Gun emplacement (Nprn270705)
Minewatcher's post (Nprn270706)
Observer's post, including chemical toilet (Nprn270704).

RCAHMW AP965024/41-3.