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Offa's Dyke: Section South of Brymbo Colliery is a linear earthwork monument forming part of the extensive frontier defence constructed during the reign of King Offa of Mercia in the late eighth century. This section of the dyke, located in Denbighshire, Wales, comprises an earthen bank and ditch that runs across the landscape south of Brymbo Colliery, representing the western boundary of the Mercian kingdom established between approximately 757 and 796 AD. The monument survives as a substantial earthwork despite later disturbance from industrial activity in the area, retaining archaeological and historical significance as evidence of Anglo-Saxon territorial control and engineering capability. The preservation of this section contributes to the understanding of Offa's Dyke as a whole, one of the most ambitious public works of the Anglo-Saxon period, stretching approximately 150 miles along the Wales-England border.
Offa's Dyke: Section South of Brymbo Colliery is a scheduled monument protected by Cadw under reference DE185. View the official record →
Offa's Dyke: Section South of Brymbo Colliery is a linear earthwork monument forming part of the extensive frontier defence constructed during the reign of King Offa of Mercia in the late eighth century. It is designated a Scheduled Ancient Monument by Cadw under reference DE185.
Offa's Dyke: Section South of Brymbo Colliery 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: Section South of Brymbo Colliery 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 DE185.
Several scheduled monuments lie within 10 km, including Wat's Dyke: Section extending from Middle Sontley to Black Brook Bridge (7.8 km), Gardden Camp (8.5 km), Wat's Dyke: Section extending from Black Brook Bridge to Pentre-Clawdd (8.7 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: Section South of Brymbo Colliery