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Llanio Roman Fort and Bathhouse is a Roman fort situated in Wales, built upon bedrock of Llandovery rocks composed of mudstone, siltstone and sandstone. The fort was strategically positioned to command the landscape typical of Roman military installations in the Welsh interior during the occupation period. Its construction exploited the underlying geology, with the stone-rich foundation providing stable ground for the substantial structures required of a frontier garrison.
The fort includes a bathhouse, a sophisticated facility reflecting the standards of Roman military engineering and the soldiers' expectations for hygiene and leisure. Such bathhouses were essential components of Roman forts, providing hot and cold bathing facilities and serving as social centres within the garrison. The presence of both fort and bathhouse indicates this was a significant installation rather than a minor outpost, suggesting its importance within the regional Roman network.
The monument is now protected by Cadw, the Welsh Historic Monuments service, under the reference CD129. This designation ensures the preservation of the archaeological remains for future study and public understanding. The site represents an important surviving example of Roman military infrastructure in Wales, where such installations formed part of the broader pattern of occupation and control exercised during Rome's presence in Britain.
Llanio Roman Fort and Bathhouse is a scheduled monument protected by Cadw under reference CD129. View the official record →
Llanio Roman Fort and Bathhouse is a Roman fort situated in Wales, built upon bedrock of Llandovery rocks composed of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference CD129.
Llanio Roman Fort and Bathhouse dates from the roman period, and is classified as a fort. It is one of over 32,000 scheduled monuments protected across the UK.
Llanio Roman Fort and Bathhouse 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 CD129.
Several scheduled monuments lie within 10 km, including Carn Fawr Round Cairn (6.5 km), Castell Goetre (6.7 km), Moelfryn Round Cairn (6.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Llanio Roman Fort and Bathhouse'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.
Llanio Roman Fort and Bathhouse stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.