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Carn Nant-yr-ast round cairn is a prehistoric burial monument located in Wales, constructed from stones gathered from the surrounding landscape. The cairn sits upon bedrock of Llandovery sandstone and conglomerate, characteristic of the Silurian period, which would have provided suitable material for building across the upland terrain. This geological foundation has preserved the monument through millennia of Welsh weather and landscape change.
Round cairns of this type typically date to the Bronze Age, serving as territorial markers and burial places for the dead. Built by stacking stones into a prominent mound, they represent significant communal investment in commemoration and ritual practice. The specific geology of the site—the interbedded sandstone and conglomerate deposits—would have influenced both the construction techniques available to prehistoric builders and the eventual preservation of the monument.
Carn Nant-yr-ast is protected under Cadw's heritage register as monument CM364, recognising its archaeological importance to Welsh prehistory. The cairn remains a visible reminder of Bronze Age burial practices and the long-standing human settlement of upland Wales, standing within a landscape whose underlying geology shaped the possibilities and constraints of ancient monument building.
Carn Nant-yr-ast round cairn is a scheduled monument protected by Cadw under reference CM364. View the official record →
Carn Nant-yr-ast round cairn is a prehistoric burial monument located in Wales, constructed from stones gathered from the surrounding landscape. It is designated a Scheduled Ancient Monument by Cadw under reference CM364.
Carn Nant-yr-ast 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.
Carn Nant-yr-ast 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 CM364.
Several scheduled monuments lie within 10 km, including Pen Cerrigdiddos Round Cairns (6 km), Cefn y Bryn Ring Cairn (6.3 km), Burnt Mound on Esgair Ferchon (6.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carn Nant-yr-ast 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.
Carn Nant-yr-ast round cairn stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is sandstone and conglomerate, interbedded.