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Nant Heilyn Stone Setting is a prehistoric stone arrangement located in Wales and protected by Cadw as a scheduled monument. The site lies upon bedrock composed of Wenlock sandstone and conglomerate, interbedded sedimentary deposits formed during the Silurian period. This geological foundation of mixed stone types may have influenced the selection and procurement of materials for the monument itself, as both stone classes would have been naturally available in the immediate landscape.
Stone settings of this type represent ritual or ceremonial activity during the prehistoric period, though the precise dating and original function of Nant Heilyn remain the subject of archaeological interpretation. The arrangement's survival on exposed upland terrain reflects the durability of its construction, whilst its location on Wenlock bedrock places it within a landscape rich in other prehistoric sites characteristic of Welsh heritage.
The monument's protection under Cadw ensures its preservation for future study and public access, enabling visitors and researchers to engage with this important archaeological record of Wales's prehistoric past.
Nant Heilyn Stone Setting is a scheduled monument protected by Cadw under reference DE284. View the official record →
Nant Heilyn Stone Setting is a prehistoric stone arrangement located in Wales and protected by Cadw as a scheduled monument. It is designated a Scheduled Ancient Monument by Cadw under reference DE284.
Nant Heilyn Stone Setting dates from the prehistoric period, and is classified as a stone setting. It is one of over 32,000 scheduled monuments protected across the UK.
Nant Heilyn Stone Setting 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 DE284.
Several scheduled monuments lie within 10 km, including Moel Rhiwlug Cist Cairn (4.1 km), Hafod-y-Dre Stone Rows and Cairn (4.2 km), Nant y Foel long hut (4.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Nant Heilyn Stone Setting'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 Heilyn Stone Setting stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.