This site is visible on aerial photographs taken throughout the 1940’s and includes six structures which can be seen inside a defended perimeter (probably of barbed wire) which together bear the hallmarks of a light AA battery, probably for a Bofors gun. These were, from the west, a sentry post, a small building, two Nissen huts, an open concrete pit and a gun emplacement. Its position on the north slope of the Heights meant that it would not see aircraft approaching from the sea so it may have been intended to target enemy aircraft flying east or west over the town, or returning from a sortie further inland (location accurate to the nearest 50m based on available information)