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Offa's Dyke: Section extending 120m from Railway to Bronwylfa Road is an early medieval linear earthwork that forms part of the celebrated frontier fortification traditionally attributed to the eighth-century Kingdom of Mercia. This particular section, protected by Cadw under reference DE194, stretches 120 metres between the railway and Bronwylfa Road, where the substantial bank-and-ditch construction remains visible across the landscape. The earthwork was constructed across challenging terrain underlain by the Pennine and South Wales Middle Coal Measures, a complex geology of mudstone, siltstone, sandstone and ironstone that would have presented considerable engineering difficulties to medieval builders.
The monument's course through Wales reflects the broader system of linear defences that once extended for over 150 kilometres along the Anglo-Welsh border. This section preserves the characteristic morphology of Offa's Dyke in its surviving form, with the ditch positioned to the west facing hostile territory. The underlying coal measures geology has influenced both the survival and character of the earthwork, affecting drainage and erosion patterns across more than a millennium of exposure to the Welsh climate.
Offa's Dyke: Section extending 120m from Railway to Bronwylfa Road, Legacy is a scheduled monument protected by Cadw under reference DE194. View the official record →
Offa's Dyke: Section extending 120m from Railway to Bronwylfa Road is an early medieval linear earthwork that forms part of the celebrated frontier fortification traditionally attributed to the eighth-century Kingdom of Mercia. It is designated a Scheduled Ancient Monument by Cadw under reference DE194.
Offa's Dyke: Section extending 120m from Railway to Bronwylfa Road, Legacy 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: Section extending 120m from Railway to Bronwylfa Road, Legacy 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 DE194.
Several scheduled monuments lie within 10 km, including Wynnstay Colliery Winding Engine House (5.1 km), Offa's Dyke: Section N of Home Farm (5.3 km), Darland Wood Round Barrows (6.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Offa's Dyke: Section extending 120m from Railway to Bronwylfa Road, Legacy'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 extending 120m from Railway to Bronwylfa Road, Legacy stands on Pennine Middle Coal Measures Formation And South Wales Middle Coal Measures Formation (Undifferentiated), bedrock that formed in the Moscovian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.