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Nant Cwm Gerwyn Cairns is a prehistoric kerb cairn situated in Wales. The monument consists of a stone mound retained by a kerb of upright stones, a characteristic form of funerary monument dating to the Neolithic or Bronze Age. Kerb cairns typically served as burial markers and ritual centres for their communities, built from locally quarried stone to create a substantial and enduring structure. The monument sits on bedrock of Wenlock Rocks, an undifferentiated sequence of interbedded sandstone and conglomerate. This local geology provided the building material used in the cairn's construction, with stone naturally fractured from the underlying strata readily available for gathering and arrangement.
The cairn is now protected as a scheduled monument under Cadw, the Welsh heritage authority, under reference number MG278. This legal designation reflects the site's archaeological significance and its value as evidence for prehistoric burial practices and settlement patterns in Wales. Such monuments contribute substantially to our understanding of how early communities organised ceremonial space and marked their attachment to particular landscapes across millennia.
Nant Cwm Gerwyn Cairns is a scheduled monument protected by Cadw under reference MG278. View the official record →
Nant Cwm Gerwyn Cairns is a prehistoric kerb cairn situated in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MG278.
Nant Cwm Gerwyn Cairns dates from the prehistoric period, and is classified as a kerb cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Nant Cwm Gerwyn Cairns 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 MG278.
Several scheduled monuments lie within 10 km, including Gwyn Fynydd Camp (6.7 km), Caersws Roman road (7 km), Caersws Roman Site (7.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Nant Cwm Gerwyn Cairns'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 Cwm Gerwyn Cairns stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.