© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Offa's Dyke: Cwm Section is a linear earthwork forming part of the celebrated frontier defence constructed during the reign of King Offa of Mercia in the late eighth century, approximately 770-796 AD. This segment preserves substantial stretches of the characteristic ditch and bank construction that formed the boundary between the Anglo-Saxon kingdom of Mercia and the Welsh principalities to the west. The earthwork at Cwm exhibits the typical engineering of Offa's Dyke, comprising a substantial bank with an accompanying ditch on the Welsh side, demonstrating the considerable labour investment and strategic intent of its construction. As a component of this nationally significant Early Medieval monument, the Cwm section remains an important archaeological witness to Mercian territorial ambition and the political geography of late Saxon Britain.
Offa's Dyke: Cwm Section is a scheduled monument protected by Cadw under reference MG151. View the official record →
Offa's Dyke: Cwm Section is a linear earthwork forming part of the celebrated frontier defence constructed during the reign of King Offa of Mercia in the late eighth century, approximately 770-796 AD. It is designated a Scheduled Ancient Monument by Cadw under reference MG151.
Offa's Dyke: Cwm Section dates from the early medieval period, and is classified as a linear earthwork. It is one of over 32,000 scheduled monuments protected across Britain.
Offa's Dyke: Cwm Section is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is MG151.
Several scheduled monuments lie within 10 km, including Offa's Dyke: section 575m north west of Myndtown (6 km), Caer-Din Ring: a small enclosed Iron Age or Romano-British settlement, an adjacent ancient field boundary, round barrow and cultivation remains (6.1 km), Offa's Dyke: section 175m east of Cefn Bronydd (7.4 km).
Aubrey generates in-depth historical research for any address in Britain — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.
Research the area around Offa's Dyke: Cwm Section