Offa's Dyke: section 175m east of Cefn Bronydd


Heritage Category: Scheduled Monument

List Entry Number: 1020899

Date first listed: 23-Feb-1933

Date of most recent amendment: 15-Apr-2004


Ordnance survey map of Offa's Dyke: section 175m east of Cefn Bronydd
© Crown Copyright and database right 2018. All rights reserved. Ordnance Survey Licence number 100024900.
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This copy shows the entry on 16-Dec-2018 at 04:06:28.


The building or site itself may lie within the boundary of more than one authority.

District: Shropshire (Unitary Authority)

Parish: Newcastle on Clun

National Grid Reference: SO 25828 83822


Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

Offa's Dyke is the longest linear earthwork in Britain, approximately 220km, running from Treuddyn, near Mold, to Sedbury on the Severn estuary. It was constructed towards the end of the eighth century AD by the Mercian king Offa, and is believed to have formed a long-lived territorial, and possibly defensive, boundary between the Saxon kingdom of Mercia and the Welsh kingdoms. The Dyke is not continuous and consists of a number of discrete lengths separated by gaps of up to 23km. It is clear from the nature of certain sections that differences in the scale and character of adjoining portions were the result of separate gangs being employed on different lengths. Where possible, natural topographic features such as slopes or rivers were utilised, and the form of Offa's Dyke is therefore clearly related to the topography. Along most of its length it consists of a bank with a ditch to the west. Excavation has indicated that at least some lengths of the bank had a vertical outer face of either laid stonework or turf revetment. The ditch generally seems to have been used to provide most of the bank material, although there is also evidence in some locations of shallow quarries. In places, a berm divides the bank and ditch, and a counterscarp bank may be present on the lip of the ditch. Offa's Dyke now survives in various states of preservation in the form of earthworks and, where sections have been levelled and infilled, as buried features. Although some sections of the frontier system no longer survive visibly, sufficient evidence does exist for its position to be accurately identified throughout most of its length. In view of its contribution towards the study of early medieval territorial patterns, all sections of Offa's Dyke exhibiting significant archaeological remains are considered worthy of protection.

The section of Offa's Dyke 175m east of Cefn Bronydd survives well throughout its length despite some localised damage caused by roads across the earthwork. The varied form of the earthwork throughout this section will provide insight into its construction and the technical skills of the people who built it. Artefactual evidence will also provide information about the changing use of the monument. In addition, environmental evidence such as pollen and seeds within the fills of the ditch and on the buried ground surface below the bank will provide information about farming practice in the area and the landscape in which the monument was constructed. This section is accessible to the public and as such is a valuable recreational and educational resource.


Legacy Record - This information may be included in the List Entry Details.


The monument includes the earthwork and buried remains of a section of the linear boundary known as Offa's Dyke 175m east of Cefn Bronydd. Offa's Dyke generally consists of a bank, up to 3.5m high, with an intermittent parallel ditch and quarry pits in places. It was strengthened in some areas by additional earthworks, namely a berm between the bank and ditch and a counterscarp bank on the outer edge of the ditch. In this section the Dyke runs for 1.9km southwards from the stream at Lower Mount along the west shoulder of Graig Hill as far as the stream at Bryndrinog Farm. At the northern end, the bank is well-preserved for some 150m and defines the north bank of the stream, with the ditch serving as the streambed. The Dyke continues southwards where the profile of the remains is influenced by the hillslope. Here the bank is visible as a terrace jutting out from the hillside. The ditch to the west cuts into the hill, and a high counterscarp bank has been formed from the spoil cast up from this work. Towards the southern end of this section the ditch has been partly infilled by land slippage but will survive as a buried feature. There are three gaps in the defences, including a road junction 110m east of Wellfield, although the bank and ditch will survive as buried features and are, therefore, included in the scheduling. Further sections of Offa's Dyke approximately 30m to the north and 250m to the south are the subject of separate schedulings. All fence posts, stiles, telegraph poles and road surfaces are excluded from the scheduling, although the ground beneath them is included.

MAP EXTRACT The site of the monument is shown on the attached map extract.


The contents of this record have been generated from a legacy data system.

Legacy System number: 32599

Legacy System: RSM


Books and journals
Kay, K, Richards, , Offa's Dyke Path North, (1995), 18

End of official listing