Crummy records, 'The dyke is known only from references in two 17th-century perambulations (Morant 1748, Bk 1, 92-3). In the earliest of these (of 1637) it is referred to as the 'Rampiers by Horkesley Heath', and on the other as 'the Rampers on Boxted and Horkesley Heath'. It appears from the erambulations that the earthwork extended westwards from a brook at the corner of Langham Park (which we are told was on the corner of Boxted Heath) to a point some way east of where the Black Brook crosses the Nayland Road. Neither point has as yet been closely fixed but the east point is probably where Salary Brook crosses the Langham Road, the west point being less precisely locatable. This gives a maximum length for the earthwork of 2.0 km (2,200 yds). It may have been longer if parts of it had been levelled or not used to define the Borough boundary. The dyke linked the ends of the valleys formed by the Salary Brook to the east and the Black Brook to the west so that together the three features protected a large arc of land on the north side of the river Colne.

CFCH prepared a plan to indicate the location of the dyke but seems never to have written any text. The numbers 1-9 on his plan (Fig 2.26) show that he intended to described the perambulations fairly fully where they crossed north of the river Colne. The dyke was probably not quite so far north since it ought to coincide with the position of the Borough boundary. Two asterisks have been added to his plan to show the two points described above and thus the likely line and maximum extent of the earthwork. The two points do not seem to have been linked by a stream in the way his figure shows.]'<1>