An early Neolithic causewayed enclosure over 200 m in diameter. Appeared in evaluation trenches 3 and 5 in 1999 (2). Excavated further in 2000 (1 and 3). Three circuits of enclosure ditches were found. Only the second to be recorded in Kent (the other is in Ramsgate), this feature is of regional and national importance.

The latest ditch fill produced a RadioCarbon date of 1190-920 cal BC (2868±35 BP, NZA-22280)(4). Original reference given as (Ellis and Allen in Allen et al. 2008):
Ellis, C. and Allen, M.J., 2008, The excavated evidence, in Allen M.J., Leivers M. and Ellis C., Neolithic Causewayed Enclosures and Later Prehistoric Farming: Duality, Imposition and the Role of Predecessors at Kingsborough, Isle of Sheppey, Kent, UK, Proceedings of the Prehistoric Society 74, 282–88

Wessex Archaeology, 2000, Kingsborough Farm Eastchurch, Isle of Sheppey, Kent. Phase 1 Stage 2 Archaeological Excavation: Summary Report (Unpublished document). SKE12298.

<1> Archaeology South-East, 2000, Archaeological investigations at Kingsborough Farm, Eastchurch, Isle of Sheppey, Kent: Post-Excavation Assessment and Draft Proposals for Future Work (Unpublished document). SKE12602.

<2> Archaeology South-East, 1999, An Archaeological Evaluation at Kingsborough Farm, Eastchurch, Isle of Sheppey, Kent (Unpublished document). SKE12325.

<3> Wessex Archaeology, 2002, Kingsborough Manor Development, Eastchurch, Isle of Sheppey, kent. Watching Briefs, Evaluation, and Phase 1, Stage 2 Excavation: Assessment Report and proposals for Post-Excavation Analyses and Publication (Unpublished document). SKE12297.

<4> Wessex Archaeology, 2008, Kingsborough Manor, Phase 3 Stages 1 and 2, Eastchurch, Isle of Sheppey, Kent (Unpublished document). SKE31436.