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Caersws Roman Site is a Roman fort located in Wales, situated upon bedrock of the Llandovery period, which consists of mudstone, siltstone and sandstone. The underlying geology of this mixed sedimentary formation would have presented particular challenges for the Roman engineers responsible for constructing the fort's defences and internal structures, requiring careful foundation work and drainage to manage water movement through the softer stone layers.
The site occupies a landscape shaped by these Palaeozoic rocks, which have been worn and weathered over millennia into the terrain the Romans encountered. The choice of location reflects both strategic considerations of the Roman occupation and practical assessment of the available ground, though the soft Llandovery bedrock would have necessitated specific construction techniques to ensure the fort's stability and longevity.
The monument is protected by Cadw, the Welsh Historic Monuments service, under the reference MG001. This scheduling recognises the archaeological and historical significance of the site as evidence of Roman military presence and infrastructure within Wales during the imperial period.
Caersws Roman Site is a scheduled monument protected by Cadw under reference MG001. View the official record →
Caersws Roman Site is a Roman fort located in Wales, situated upon bedrock of the Llandovery period, which consists of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference MG001.
Caersws Roman Site 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 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 MG001.
Several scheduled monuments lie within 10 km, including Llandinam Hall Enclosure (2 km), The Moat Mound & Bailey Castle (2 km), Cefn Carnedd Camp (2.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caersws 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.
Caersws Roman Site stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.