Roman RidgeLinear earthwork extending for a distance of 10 miles, and is thought to be Iron Age or early Medieval in date, possibly a boundary.
PastScape
The Roman Rig, a linear earthwork, extends for some ten miles from the Pennine foothills in Sheffield to low ground near Mexborough (SE 4700) and near Kilnhurst (SK 460 976). In the west, where steep slopes form the northern side of the Don valley, the `Rig' is single, but to the east, double earthworks running more or less parallel and up to a mile apart, continue across undulating country.
The general layout suggests that the earthwork was intended to restrict access from the middle Don valley to the upland region to the north and north-west.
There is slight evidence to suggest a Brigantian date for the earthwork. This consists of a fragment of 3rd century mortarium rim found at Hilltop in 1947 on the level of the secondary silting of the ditch (SK 3981 9255), also a Roman coin hoard (SK 39 SE 23) found in 1891 apparently in the ridge, but these finds are not regarded as being conclusive, and the possibility of an Anglian date cannot be excluded.
It’s dirt ~ lots of stuff in dirt.
One Giant Speed Bump for Chariots
You mean that walls at the border are not a new thing?