Most of the ditch has been lost to agriculture over time, but its line its marked throughout by both hedgerow and the route of the Harcomlow Way and Icknield Way paths.
[1] Beginning on the fringes of Heydon Village, the ditch's course quickly descends from the higher ground (120m) to the flatter agricultural landscape below (55m).
For a short distance the workings are several metres high as the footpath descends the hill through the ditch and onto the flatter ground below.
It would have been used as a defensive structure as well as a means controlling trade along Roman roads that cross the dyke, including the Icknield Way.
Black Ditches, Cavenham is a fifth earthwork guarding the ancient Icknield Way and can be found in Suffolk just north west of Bury St Edmunds.