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Cwm-Brwyn Roman Site is a Roman farmstead located in Wales, protected by Cadw under reference CM139. The site lies upon bedrock of Pridoli age, consisting of undifferentiated mudstone, siltstone and sandstone deposits that would have provided a stable foundation for occupation. This geological sequence, dating to the Silurian period, characterises much of the Welsh landscape and shaped both the physical setting and the practical constraints of Roman settlement in this region.
The farmstead represents the type of agricultural settlement that supported the Roman military and civilian economy across Britain's western frontier. Such sites typically comprised a main residence, ancillary structures for storage and animal husbandry, and associated field systems. The Pridoli bedrock's mixed lithology would have offered variable drainage characteristics across the site, influencing where buildings were positioned and how water management was undertaken.
The protection of Cwm-Brwyn under Cadw's guardianship recognises its significance as evidence of rural Roman life in Wales. Farmsteads of this period and region provide important archaeological insight into how Romano-British communities adapted to upland terrain and developed sustainable agricultural practices beyond the major centres of Roman authority and investment.
Cwm-Brwyn Roman Site is a scheduled monument protected by Cadw under reference CM139. View the official record →
Cwm-Brwyn Roman Site is a Roman farmstead located in Wales, protected by Cadw under reference CM139.
Cwm-Brwyn Roman Site dates from the roman period, and is classified as a farmstead. It is one of over 32,000 scheduled monuments protected across the UK.
Cwm-Brwyn Roman Site 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 CM139.
Several scheduled monuments lie within 10 km, including Little Mountain Round Barrow (1.9 km), Pant-Glas Camp (2 km), Castle-Lloyd Round Barrow (2.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cwm-Brwyn Roman Site'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.
Cwm-Brwyn Roman Site stands on Pridoli Rocks (Undifferentiated), bedrock that formed in the Pridoli. The rock here is mudstone, siltstone and sandstone.