Undated linear dyke with southern ditch. Nothing now remains above ground.

A.F. Hall undertook an auguring survey in Colchester Cemetery to trace the alignment of the Monkwick-Barnhall rampart or dyke. He surmises that the line must have run, SW to NE, from the top of Berechurch Dyke towards the Colne where Salary Brook joins it.<1><2> Hall may have also undertaken some trenching, as indicated by the large trenches reproduced in the plan of his work, however the text is not clear.

In 1945, three sections were dug across Barnhall Dyke (MCC8985) revealing an unusually shallow ditch 1.5m deep and 7.62m wide. Pottery was recovered and dated as Anglo-Saxon. These finds are now lost and assumed misdiagnosed, probably being Iron Age Little Waltham ware.<2>