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Trefwri Standing Stone is a prehistoric upright stone monument standing in the Welsh landscape. Like other standing stones of its kind, it dates from the Neolithic or Bronze Age and represents a significant marker in the ancient settlement and spiritual geography of its region. The stone remains in situ, testament to the continuity of this place across millennia.
The monument rises from bedrock composed of metamorphic rocks of Neoproterozoic age, including marble and meta-limestone formed during ancient mountain-building processes over 540 million years ago. This ancient geological foundation provides the raw material from which the stone itself may have been selected, anchoring the monument to the deep history of the landscape. The metamorphic character of the local stone would have presented the builders with particularly durable material for their undertaking.
Trefwri Standing Stone is protected by Cadw, the Welsh heritage organisation, under reference AN086. This designation recognises its archaeological and cultural importance as a surviving example of prehistoric monumental practice. The stone's continued presence in the landscape offers evidence of how communities in prehistoric Wales marked their territory and commemorated significant places and occasions.
Trefwri Standing Stone is a scheduled monument protected by Cadw under reference AN086. View the official record →
Trefwri Standing Stone is a prehistoric upright stone monument standing in the Welsh landscape. It is designated a Scheduled Ancient Monument by Cadw under reference AN086.
Trefwri 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.
Trefwri 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 AN086.
Several scheduled monuments lie within 10 km, including Caernarfon Town Walls (5.1 km), Castell Caernarfon (5.1 km), Lower Roman Fort (5.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Trefwri 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.
Trefwri Standing Stone stands on Unnamed Metamorphic Rocks, Neoproterozoic, bedrock that formed in the Neoproterozoic. The rock here is marble, meta-limestone.