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Llyn y Tarw ritual complex is a prehistoric stone circle situated in Wales. The monument stands on bedrock composed of Wenlock rocks, an interbedded sequence of sandstone and conglomerate that provides a naturally uneven foundation. This geological setting, typical of the Ordovician period, may have held significance for those who selected this location for ritual activity during prehistory. The site's name, meaning 'lake of the bull' in Welsh, suggests historical associations with water or pastoral significance in the landscape.
The stone circle exemplifies the ritual monuments constructed across Britain and Ireland during the Neolithic and Bronze Age periods. Such complexes typically served ceremonial, astronomical or commemorative functions within their communities. The arrangement of stones would have created a defined sacred space, distinguishing it from surrounding domestic or agricultural land.
The monument is protected by Cadw, the Welsh heritage authority, under the reference MG258, recognising its archaeological and cultural importance. This statutory protection ensures that the site and its immediate surroundings remain preserved for continued study and public access, allowing visitors and researchers to engage with this tangible link to Wales's prehistoric past.
Llyn y Tarw ritual complex is a scheduled monument protected by Cadw under reference MG258. View the official record →
Llyn y Tarw ritual complex is a prehistoric stone circle situated in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MG258.
Llyn y Tarw ritual complex dates from the prehistoric period, and is classified as a stone circle. It is one of over 32,000 scheduled monuments protected across the UK.
Llyn y Tarw ritual complex 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 MG258.
Several scheduled monuments lie within 10 km, including Roman Earthwork NE of Caersws (revealed by aerial photography) (5.3 km), Caersws Roman Site (5.6 km), Caersws Roman Fort and Vicus: section in SE part of vicus (5.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Llyn y Tarw ritual complex'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.
Llyn y Tarw ritual complex stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.