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Offa's Dyke is a linear earthwork that forms part of the longer defensive frontier constructed under the direction of King Offa of Mercia during the late eighth century. The section on St Briavels Common, located approximately 400 metres east of Yewgreen Farm, comprises a substantial bank and ditch that survives as a prominent landscape feature across the Gloucestershire-Monmouthshire border. This portion of the dyke demonstrates the characteristic engineering typical of the monument, with the bank facing the Welsh side, and represents an important surviving example of the extensive frontier works that stretched for over 150 kilometres during the Anglo-Saxon period. The earthwork remains a significant archaeological and historical witness to the territorial assertions and military architecture of eighth-century England.
Offa's Dyke: section on St Briavels Common, 400m east of Yewgreen Farm is a scheduled monument protected by Historic England under reference 1020594. View the official record →
Offa's Dyke is a linear earthwork that forms part of the longer defensive frontier constructed under the direction of King Offa of Mercia during the late eighth century. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1020594.
Offa's Dyke: section on St Briavels Common, 400m east of Yewgreen Farm is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1020594.
Several scheduled monuments lie within 10 km, including Offa's Dyke: section in Chapelhouse Wood, 240m west of the Recreation Ground (7.2 km), The Alcove, Piercefield (7.6 km), Chepstow Town Slipway (8.1 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Offa's Dyke: section on St Briavels Common, 400m east of Yewgreen Farm's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Offa's Dyke: section on St Briavels Common, 400m east of Yewgreen Farm stands on Upper Devonian Rocks (Undifferentiated), bedrock that formed in the Late Devonian. The rock here is sandstone and conglomerate, interbedded.