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Y Gaerwen Enclosure, Llangar is a prehistoric enclosure located in Wales and protected by Cadw under reference ME091. The monument occupies ground underlain by Wenlock Rocks, a Silurian-age bedrock comprising interbedded sandstone and conglomerate that would have shaped the site's topography and drainage patterns throughout its occupation. The solid geology of this ancient sea-floor deposit now forms the physical foundation upon which the enclosure's earthworks survive.
The enclosure belongs to a widespread tradition of prehistoric monument-building across Britain and Wales, typically serving defensive, ceremonial or territorial functions during the Neolithic or Bronze Age periods. The sandstone and conglomerate bedrock underlying the site would have presented practical constraints and opportunities for construction, influencing where ditches could be dug and where natural outcrops might have been incorporated into the perimeter works.
Y Gaerwen Enclosure remains a significant record of prehistoric land-use and settlement patterns in the Llangar landscape. Its archaeological and historical value merits its formal protection, preserving an important element of Wales's pre-Roman cultural heritage for research and public understanding of early communities who shaped the Welsh countryside.
Y Gaerwen Enclosure, Llangar is a scheduled monument protected by Cadw under reference ME091. View the official record →
Y Gaerwen Enclosure, Llangar is a prehistoric enclosure located in Wales and protected by Cadw under reference ME091.
Y Gaerwen Enclosure, Llangar dates from the prehistoric period, and is classified as a enclosure. It is one of over 32,000 scheduled monuments protected across the UK.
Y Gaerwen Enclosure, Llangar 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 ME091.
Several scheduled monuments lie within 10 km, including Two Ring Cairns West of Cwm Tywyll (6.9 km), Cwm Tywyll House Platforms (7 km), Cefn Penagored Cairn and Ring Cairn (7.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Y Gaerwen Enclosure, Llangar'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.
Y Gaerwen Enclosure, Llangar stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.