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Caersws Roman Fort: Section of South Western Defences is a Roman fort located in Wales, protected as a scheduled monument by Cadw under reference MG222. The fort was constructed on bedrock comprising Llandovery rocks, an undifferentiated sequence of mudstone, siltstone and sandstone formed during the Llandovery period. This geological foundation provided a stable base for the substantial stone and timber fortifications that characterised Roman military architecture in the 1st and 2nd centuries AD.
The surviving section represents part of the fort's south western defensive circuit, illustrating the engineering approach Roman commanders employed to secure their positions in the Welsh borderlands. Such forts typically accommodated auxiliary troops and served administrative and supply functions across the occupied territory.
The Llandovery rocks underlying the site, while relatively soft sedimentary materials, would have been amenable to quarrying for construction stone and would have influenced drainage patterns affecting the fort's layout. This surviving section provides important archaeological evidence of Roman military occupation and engineering adaptation to local geological conditions in Wales.
Caersws Roman Fort: Section of South Western Defences is a scheduled monument protected by Cadw under reference MG222. View the official record →
Caersws Roman Fort: Section of South Western Defences is a Roman fort located in Wales, protected as a scheduled monument by Cadw under reference MG222.
Caersws Roman Fort: Section of South Western Defences dates from the roman period, and is classified as a fort. It is one of over 32,000 scheduled monuments protected across the UK.
Caersws Roman Fort: Section of South Western Defences 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 MG222.
Several scheduled monuments lie within 10 km, including Llandinam Hall Enclosure (1.8 km), Cefn Carnedd Camp (2.1 km), The Moat Mound & Bailey Castle (2.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caersws Roman Fort: Section of South Western Defences'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.
Caersws Roman Fort: Section of South Western Defences stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.