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Mynydd Waun Fawr Roman road is a Roman thoroughfare in Wales, protected as a scheduled monument by Cadw under reference MG320. The route crosses terrain underlain by Ashgill Rocks, a formation of mudstone, siltstone and sandstone that shaped the engineering challenges faced by Roman builders. These ancient sedimentary strata, deposited during the Ordovician period, would have influenced both the road's construction and drainage characteristics across the upland landscape.
Roman roads in Wales typically served military and administrative purposes, connecting forts and facilitating the movement of troops and supplies across difficult terrain. The Mynydd Waun Fawr route traverses exposed high ground where the underlying geology creates naturally damp conditions requiring careful management of surface water. The road's survival to the present day, visible as an earthwork feature in the landscape, reflects the substantial engineering investment required to create a durable metalled surface across these challenging geological conditions.
The monument remains an important archaeological resource documenting Roman communications infrastructure and the strategies Romans employed to construct permanent roads in the mountainous regions of Wales. Its preservation allows understanding of how Roman engineering adapted to local geological and topographical conditions in upland Britain.
Mynydd Waun Fawr Roman road is a scheduled monument protected by Cadw under reference MG320. View the official record →
Mynydd Waun Fawr Roman road is a Roman thoroughfare in Wales, protected as a scheduled monument by Cadw under reference MG320.
Mynydd Waun Fawr Roman road dates from the roman period, and is classified as a road. It is one of over 32,000 scheduled monuments protected across the UK.
Mynydd Waun Fawr Roman road 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 MG320.
Several scheduled monuments lie within 10 km, including Mynydd Bwlch-y-gors standing stone (8.8 km), Pen y Groes Uchaf Cairn (9.1 km), Bryn Du hut circle (9.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Mynydd Waun Fawr Roman road'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.
Mynydd Waun Fawr Roman road stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.