A Second World War concrete pillbox, located on the western edge of Cliffe Woods, has been mapped from aerial photographs as part of the English Heritage: Hoo Peninsula Landscape Project. This hexagonal pillbox was part of the in depth defences associated with the Hoo Stop Line (Monument 1542577), a system of anti tank ditches, pillboxes and gun emplacements constructed in 1940 across the south western third of the Hoo Peninsula, from the Medway to the Thames. The pillbox was located 360 metres to the south west of a section of anti tank ditch and faced north along Town Road.