During an archaeological watching brief, undertaken on repairs to water mains within the ground of Dover Castle 0.85m of post medieval deposits which included three chalk surfaces were uncovered At the base of the exposed sequence, the top of the natural chalk was revealed at a depth of about 1.02m (c. 106.10m OD). Above this was a 0.15m thick layer of well-compacted chalk rubble containing occasional pieces of eighteenth- or nineteenth-century orange-red brick. In turn, this was sealed by a thick dump deposit of mixed light grey-brown clay, containing frequent small chalk lumps, moderate numbers of small sub-angular flints, some flint pebbles and moderate amounts of small red brick fragments. Above the dump deposit, three successive layers of rammed chalk rubble separated by two grey loam layers appeared to represent a series of walking surfaces separated by thin tread layers. The total thickness of these chalk surfaces was about 0.10m and the top of the highest one lay at a depth of 0.17m below present ground level. - Summarised from report (1)

<1> Canterbury Archaeological Trust, 2014, Dover Castle Water Mains, Dover, Kent: Archaeological Watching Brief Report (Unpublished document). SKE31317.