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Cwm Gloyn Camp is a prehistoric promontory fort situated inland in Wales. The monument occupies a naturally defensive position, its ramparts and ditches cut into bedrock composed of Ashgill mudstone, siltstone and sandstone. This geological foundation, formed during the Ashgill period, provided a stable base for the construction and has helped preserve the earthwork's defining features across the millennia.
The fort exploits the topography of its setting, with the promontory form offering inherent defensive advantages to its prehistoric occupants. The ditches and banks, cut and built into the local geology, would have created formidable barriers against approach. Such promontory forts were characteristic of Iron Age settlement in western Britain, though occupation may have extended across several prehistoric periods.
The site remains under the protection of Cadw, the Welsh heritage monuments authority, registered as PE306. The monument's survival and accessibility make it an important resource for understanding prehistoric settlement patterns and defensive strategies in Wales. The earthworks remain substantially legible in the landscape, reflecting the enduring relationship between human settlement design and the underlying geology.
Cwm Gloyn Camp is a scheduled monument protected by Cadw under reference PE306. View the official record →
Cwm Gloyn Camp is a prehistoric promontory fort situated inland in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference PE306.
Cwm Gloyn Camp dates from the prehistoric period, and is classified as a promontory fort - inland. It is one of over 32,000 scheduled monuments protected across the UK.
Cwm Gloyn Camp 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 PE306.
Several scheduled monuments lie within 10 km, including Waun Clyn-Coch Hut Group (8.3 km), Foel Eryr Round Cairn (8.5 km), Foel Eryr Hut Group (8.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cwm Gloyn Camp'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 Gloyn Camp stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.