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Offa's Dyke: Sections N & S of Bryn yr Owen Colliery is a linear earthwork dating to the late eighth century, constructed during the reign of King Offa of Mercia as a territorial and defensive boundary between the Anglo-Saxon kingdom and the Welsh kingdoms to the west. This section of the wider Offa's Dyke monument, which extends for approximately 149 miles along the England-Wales border, survives in fragmentary form at this location in Denbighshire. The earthwork comprises a substantial bank and ditch, though its preservation has been affected by colliery activities in the vicinity. The monument represents a significant example of early medieval engineering and political assertion, marking a critical phase in the formation of the Anglo-Welsh frontier during the early medieval period.
Offa's Dyke: Sections N & S of Bryn yr Owen Colliery is a scheduled monument protected by Cadw under reference DE179. View the official record →
Offa's Dyke: Sections N & S of Bryn yr Owen Colliery is a linear earthwork dating to the late eighth century, constructed during the reign of King Offa of Mercia as a territorial and defensive boundary between the Anglo-Saxon kingdom and the Welsh kingdoms to the west. It is designated a Scheduled Ancient Monument by Cadw under reference DE179.
Offa's Dyke: Sections N & S of Bryn yr Owen 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 the UK.
Offa's Dyke: Sections N & S of Bryn yr Owen 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 DE179.
Several scheduled monuments lie within 10 km, including Offa's Dyke: Section N & S of Tan-y-Cut (6.4 km), Offa's Dyke: Section N & S of Plas-Offa (6.9 km), Pontcysyllte Aqueduct and Canal (7.2 km).
Aubrey generates in-depth historical research for any address in the UK — 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: Sections N & S of Bryn yr Owen Colliery