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Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno is a prehistoric round cairn situated on the coal-bearing uplands of South Wales. The monument stands on bedrock of the South Wales Upper Coal Measures Formation, where mudstone, siltstone and sandstone underlie the moorland surface. Ring cairns of this type, typically dating to the Bronze Age, are distinguished by a circular bank or kerb of stones surrounding a central area that may contain burial deposits or ritual features. The exposed ironstone and ferricrete layers within the local geology would have been visible on the surrounding slopes, part of the distinctive landscape of the South Wales coalfield.
The cairn occupies a position characteristic of Bronze Age funerary monuments in upland Wales, situated on open moorland where visibility across the landscape would have been considerable. Its construction reflects the substantial communal effort required to gather and arrange stone in an area where bedrock outcrops and scree would have provided raw materials.
The monument is protected by Cadw, the Welsh Historic Monuments service, under reference GM373, recognising its importance to the archaeological heritage of Llanwonno and the wider South Wales region.
Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno is a scheduled monument protected by Cadw under reference GM373. View the official record →
Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno is a prehistoric round cairn situated on the coal-bearing uplands of South Wales. It is designated a Scheduled Ancient Monument by Cadw under reference GM373.
Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno dates from the prehistoric period, and is classified as a round cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno 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 GM373.
Several scheduled monuments lie within 10 km, including Carn-y-Wiwer Cairnfield & Platform Houses (4.2 km), Mynydd Ty'n-tyle cairns (5.2 km), Ventilation Furnace, Trehafod (6.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Ring Cairn 350m W of Penrhiw Caradoc, Llanwonno'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 350m W of Penrhiw Caradoc, Llanwonno 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.