One ring ditch and another partial ring ditch located to the north-west of Broadstairs Harbour, visible as cropmarks and mapped from military aerial photographs taken in 1942.

The complete ring ditch has an overall diameter of approximately 23m and is located around 70m directly north of the partially visible ring ditch, of which only a quarter has been mapped.

Both features are first visible in May 1942 [1]. The southern ditch is not seen again in any later photographs whereas the northern ring ditch is still visible in April 1950 [2]. The area has been redeveloped by June 1980.

A transcription of the features recorded from aerial photography exists within a GIS layer held by this HER [3].

<3> Wessex Archaeology, 2009-10, South-East Rapid Coastal Zone Assessment Survey - Aerial Photographic Transcriptions (Digital archive). SWX15705.

<3> Wessex Archaeology, 2011, South East Rapid Coastal Zone Assessment Survey - (SE RCZAS) Phase 1: National Mapping Programme Report (Unpublished document). SKE25955.

<3> Cornwall Council Historic Environment Projects and Gloucestershire County Council, 2011, South East Rapid Coastal Zone Assessment Survey National Mapping Programme Components 1&2: Results of NMP Mapping (Unpublished document). SKE25954.