Tags: Site Of Special Scientific Interest.
Black Ditches is an earthwork and Site of Special Scientific Interest (SSSI) close to the village of Cavenham in the English county of Suffolk. The earthwork is generally assumed to be an Anglo-Saxon boundary dating to the 6th or 7th century. Two sections of ditch remain visible one to the north-east of the village and one to the south-east covering a total of 4.5 miles (7.2 km). Both sections are designated as a scheduled monument. Only the southern section is designated as an SSSI.
