Devil's Dyke, Cambridgeshire
…in the ditch fills suggest that the dyke fell into disuse soon after it was built. The other Cambridgeshire dykes include Fleam Dyke, Brent Ditch and Bran Ditch. In Suffolk, to the north west of Bury St Edmunds, a fifth earthwork, Black Ditches, Cavenham, guards the Icknield Way. The site has extensive chalk…