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Garn Wen Round Cairn is a prehistoric round cairn located in Wales and protected as a scheduled ancient monument by Cadw under reference BR103. The site sits upon Lower Devonian rocks comprising mudstone, siltstone and sandstone laid down during the Early Devonian period, which provide both the geological foundation and likely the primary source of stone used in the cairn's construction.
Round cairns of this type typically date to the Bronze Age and served as burial monuments, though the specific period of Garn Wen's construction has not been determined from the available evidence. The monument consists of a mound of carefully stacked stones, a construction method well suited to the locally available Devonian lithologies. The irregular weathered surface visible today reflects both the natural fracturing properties of these sedimentary rocks and millennia of exposure to the Welsh climate.
The designation as a Cadw-protected monument recognises Garn Wen's significance as a prehistoric survival and its contribution to understanding settlement, burial practice and land use in Bronze Age Wales. Its preservation on the Lower Devonian bedrock of the region provides archaeological evidence of how prehistoric communities adapted their monument-building techniques to local geological resources.
Garn Wen Round Cairn is a scheduled monument protected by Cadw under reference BR103. View the official record →
Garn Wen Round Cairn is a prehistoric round cairn located in Wales and protected as a scheduled ancient monument by Cadw under reference BR103.
Garn Wen Round Cairn 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.
Garn Wen Round Cairn 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 BR103.
Several scheduled monuments lie within 10 km, including Twyn Cerrig-Cadarn Round Cairn (2.6 km), Stone Circle and Round Cairn W of Ynyshir (2.8 km), Tir-cyd Deserted Rural Settlement (3.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Garn Wen Round Cairn'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.
Garn Wen Round Cairn stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.