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Nant y Benglog cairn is a prehistoric round cairn located in Wales and protected by Cadw under reference CN370. The monument sits upon bedrock of Caradoc Rocks, comprising mudstone, siltstone and sandstone deposited during the Caradocian period, which provided a stable foundation for its construction. These sedimentary rocks, exposed across the surrounding landscape, would have yielded suitable stone for the cairn's building, making the site geologically well-suited to monument construction.
Round cairns of this type typically date to the Bronze Age and served as burial monuments, often containing cremated remains or inhumations within central chambers or beneath stone covers. The accumulation of stone across the site created a conspicuous marker visible across the Welsh terrain. The specific topography and geology of this location shaped its construction and its place within the prehistoric landscape.
Nant y Benglog cairn remains an important archaeological feature representative of Bronze Age burial practices in Wales. Its protection reflects the significance of such monuments in understanding past communities and their ritual practices. The cairn stands as evidence of sustained human activity and territorial use across the prehistoric Welsh uplands.
Nant y Benglog cairn is a scheduled monument protected by Cadw under reference CN370. View the official record →
Nant y Benglog cairn is a prehistoric round cairn located in Wales and protected by Cadw under reference CN370.
Nant y Benglog 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.
Nant y Benglog 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 CN370.
Several scheduled monuments lie within 10 km, including Capel Curig cairn (3.4 km), Dyffryn Mymbyr cairn circle (4.2 km), Bryn-y-Gefeiliau Roman Site (4.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Nant y Benglog 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.
Nant y Benglog cairn stands on Caradoc Rocks (Undifferentiated), bedrock that formed in the Caradocian. The rock here is mudstone, siltstone and sandstone.