© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Standing Stone NW of Trallwyn is a prehistoric standing stone located in Wales and protected by Cadw under reference CN155. The monument rises from bedrock composed of Ordovician extrusive rocks, a foundation of ancient felsic lava and tuff deposits formed over 440 million years ago during the Ordovician period. This geological setting of volcanic stone would have been well-known to the prehistoric communities who erected the monument, as such formations were naturally visible in the surrounding landscape.
Standing stones of this type were typically raised during the Neolithic or Bronze Age as territorial markers, gathering places, or monuments connected to ritual practices. The positioning of this example northwest of Trallwyn reflects patterns of monument placement across the Welsh uplands, often sited at prominent points within the local terrain. The survival of the stone and its Cadw protection status underline its significance as a record of prehistoric land use and cultural expression.
Standing Stone NW of Trallwyn is a scheduled monument protected by Cadw under reference CN155. View the official record →
Standing Stone NW of Trallwyn is a prehistoric standing stone located in Wales and protected by Cadw under reference CN155.
Standing Stone NW of Trallwyn 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.
Standing Stone NW of Trallwyn 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 CN155.
Several scheduled monuments lie within 10 km, including Hut Group North-East of Carnguwch Fawr (1.1 km), Moel Gwynus Standing Stone (3.4 km), Four Crosses Standing Stone (3.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Standing Stone NW of Trallwyn'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.
Standing Stone NW of Trallwyn stands on Unnamed Extrusive Rocks, Ordovician, bedrock that formed in the Ordovician. The rock here is felsic lava and felsic tuff.