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Gwersyll is a prehistoric enclosure located in Wales and protected by Cadw under reference GM239. The monument occupies ground underlain by the South Wales Upper Coal Measures Formation, a Westphalian-age sequence of mudstone, siltstone, sandstone, coal, ironstone and ferricrete. This underlying geology shaped the character of the local landscape and the resources available to its prehistoric inhabitants.
The enclosure represents a form of settlement or territorial marker from prehistory, when such monuments served as focal points for community activity, defence or ritual practice. Its construction would have required substantial communal effort to create the substantial earthwork that still survives today. The specific layout and dimensions of Gwersyll reflect the engineering knowledge and social organisation of its builders.
The monument's survival in the Welsh landscape testifies to the robustness of its original construction. Today it remains a significant archaeological record of prehistoric land use and settlement patterns in Wales. Its protected status recognises the irreplaceable evidence it preserves for understanding the social and economic lives of prehistoric Welsh communities.
Gwersyll is a scheduled monument protected by Cadw under reference GM239. View the official record →
Gwersyll is a prehistoric enclosure located in Wales and protected by Cadw under reference GM239.
Gwersyll dates from the prehistoric period, and is classified as a enclosure. It is one of over 32,000 scheduled monuments protected across the UK.
Gwersyll 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 GM239.
Several scheduled monuments lie within 10 km, including Rhos-Gwawr cairn cemetery (4.8 km), Remains of Iron Furnace at Cwmaman (5.1 km), Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno (6.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Gwersyll'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.
Gwersyll stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.