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Nant Cilgwyn standing stone is a prehistoric monument located in Wales and protected by Cadw under reference CM361. The stone rises from bedrock composed of Llandovery rocks, a formation of mudstone, siltstone and sandstone laid down in the Llandovery period. These fine-grained sedimentary layers provided the geological foundation upon which the monument was erected.
Standing stones such as this were typically raised during the Bronze Age, though some may date to the late Neolithic period. They served various functions within prehistoric communities, from territorial markers and meeting places to memorials or sacred sites aligned with astronomical events. The choice of location at Nant Cilgwyn, positioned on the local Llandovery bedrock, suggests deliberate placement within the landscape known to those who erected it.
The stone's survival to the present day reflects both its robust construction and the enduring significance of such monuments within Welsh heritage. Its protection by Cadw recognises its importance as evidence of prehistoric settlement patterns and ritual practices in Wales. The monument remains a tangible link to the people who inhabited this region thousands of years ago.
Nant Cilgwyn standing stone is a scheduled monument protected by Cadw under reference CM361. View the official record →
Nant Cilgwyn standing stone is a prehistoric monument located in Wales and protected by Cadw under reference CM361.
Nant Cilgwyn standing stone dates from the prehistoric period, and is classified as a standing stone. It is one of over 32,000 scheduled monuments protected across the UK.
Nant Cilgwyn standing stone 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 CM361.
Several scheduled monuments lie within 10 km, including Dolaucothi Gold Mines (3.1 km), Mynydd Llansadwrn ring cairn (3.5 km), Talley Mound and Bailey Castle (4.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Nant Cilgwyn standing stone'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 Cilgwyn standing stone stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.