A WW2 searchlight installation visible as two adjacent curvilinear embanked enclosures with diameters of c.12.5m. Both have two opposing entrances and a slight outer ditch. The north-easterly enclosure had a slight central mound about 1m across which is thought to be the sound locator. This emplacement also had an embanked entrance sith offset banks (perhaps sandbags) creating a zig-zag entrance to the NE for emergency air raid protection. The southern enclosure housed the searchlight. Both were seen surviving as earthworks on aerial photographs teken in 1950, but were subsequently levelled and visible as a cropmark , appearing as two incomplete ditched curvilinear enclosures with no trace of an inner bank. Immediately to the south of the searchlight emplacement was a single weapons pit for a LAMG (Light Anti-aircraft macine gun) to protect the searchlight. These were mapped from aerial photographs as part of the English Heritage: Hoo Peninsula Landscape Project.