This must rank as one of the largest ancient earth banks in the British Isles. It is thought to represent the boundary of a petty Kingdom.
The best preserved bits of the earthwork are found at Willake wood (SX153569)
The longest surviving stretch is 5 1/2 miles long at SX141572 – SX217566
Parts of the bank are stone faced.
It measures upto 15 feet high and 8 yards wide in some places.