© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Pen Celli Standing Stone is a prehistoric standing stone located in Wales and protected by Cadw under reference CM122. The monument rises from bedrock composed of Pridoli rocks—undifferentiated mudstone, siltstone and sandstone laid down during the Pridoli epoch. These durable geological foundations have anchored the stone in place for millennia, their layered composition providing stable ground across the surrounding landscape.
Standing stones of this type typically date to the Bronze Age or earlier prehistoric periods, serving purposes that remain enigmatic but likely held ritual, territorial or commemorative significance for local communities. The Pridoli geology underlying Pen Celli is characteristic of upland Welsh regions, where such stones were frequently erected on elevated ground commanding views across valleys and ridges.
The monument survives as a testament to prehistoric Welsh engineering and cultural practice. Its protected status recognises its archaeological importance and ensures its preservation as a record of early Welsh settlement patterns and beliefs. The stone's persistence through thousands of years reflects both the skill of those who raised it and the stable geological substrate that has supported it ever since.
Pen Celli Standing Stone is a scheduled monument protected by Cadw under reference CM122. View the official record →
Pen Celli Standing Stone is a prehistoric standing stone located in Wales and protected by Cadw under reference CM122.
Pen Celli 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.
Pen Celli 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 CM122.
Several scheduled monuments lie within 10 km, including Limekilns at Penymynydd, Pedair Heol (4.3 km), Remains of Blast Furnace at Pont Henry (5.8 km), Pen-Lan-Uchaf Standing Stone (6.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Pen Celli 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.
Pen Celli Standing Stone stands on Pridoli Rocks (Undifferentiated), bedrock that formed in the Pridoli. The rock here is mudstone, siltstone and sandstone.