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Ring Cairn 540m SW of Llyn y Tarw is a prehistoric ring cairn sited on the upland terrain of Wales. The monument consists of a circular arrangement of stones characteristic of ring cairns, which typically date to the Bronze Age and served both ceremonial and burial functions. Built upon bedrock of Wenlock sandstone and conglomerate, the site sits in challenging upland ground where stone from the underlying geology would have been readily available for construction.
The cairn's position in this exposed landscape reflects Bronze Age settlement patterns, with communities establishing ritual sites at higher elevations. The Wenlock rocks beneath the monument form part of the sedimentary sequence that dominates the region's geology, providing a natural supply of building material. The site overlooks Llyn y Tarw, an important local geographical landmark that likely held significance for the prehistoric communities who built and used this cairn.
The monument is protected by Cadw, the Welsh heritage authority, under reference MG180, recognising its archaeological importance as evidence of prehistoric ritual practice and settlement organisation in upland Wales. Ring cairns of this type remain important records of Bronze Age communities and their monumental expressions of territorial and ceremonial identity.
Ring Cairn 540m SW of Llyn y Tarw is a scheduled monument protected by Cadw under reference MG180. View the official record →
Ring Cairn 540m SW of Llyn y Tarw is a prehistoric ring cairn sited on the upland terrain of Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MG180.
Ring Cairn 540m SW of Llyn y Tarw dates from the prehistoric period, and is classified as a ring cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Ring Cairn 540m SW of Llyn y Tarw 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 MG180.
Several scheduled monuments lie within 10 km, including Caersws Roman road (5.3 km), Caersws Roman Site (5.3 km), Caersws Roman Fort: Section of South Western Defences (5.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Ring Cairn 540m SW of Llyn y Tarw'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.
Ring Cairn 540m SW of Llyn y Tarw stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.