A number of pillboxes were constructed across the Western Heights in the 20th century to cover the approaches to the heights, these are generally inter-visible. This example is a type 23 pillbox comprising two cells; an open Anti Aircraft pit at the western end with a central concrete pillar for a light machine gun, is located close to the western flank of Citadel Battery. The AA pit measures 2.35m by 1.84m with walls 1.65m high. There is no doorway into the pit so that the walls must be scaled to gain access. The pillbox, 2.30m square internally, is entered through a doorway 0.49m wide by 1.61m high; it has a flat concrete roof. Immediately inside, a concrete ricochet wall, 1.35m long by 0.23m wide, partially divides the pillbox. (1-4)

<1> CBA Defence of Britain Project, 1994, Defence of Britain Site Report, Pers. Comm. David Burridge, KDRG/PSG (Bibliographic reference). SKE6447.

<2> RCHME, 2001, The Western Heights, Dover, Kent. Report No 10: Miscellaneous Structures 1850-1945 (Unpublished document). SKE17506.

<3> RCHME, 2000, The Western Heights, Dover, Kent. Report No 8: The Citadel Battery: An early 20th-century coastal battery (Unpublished document). SKE17504.

<4> Historic England, National Heritage List for England (Index). SKE29372.