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Ffynnon Mary Burnt Mound is a prehistoric burnt mound situated 300 metres south-east of Carn Wen in Wales. The monument consists of accumulated heat-fractured stone, a characteristic feature of Bronze Age and Iron Age activity in Britain and Ireland. These mounds formed where people repeatedly heated stones in fires and then plunged them into water-filled troughs or pits, likely for cooking, bathing or industrial processing. The practice left behind distinctive spreads of fire-reddened and cracked stone that can survive for millennia in the landscape.
The site sits upon Ashgill Rocks, an undifferentiated sequence of mudstone, siltstone and sandstone of Ashgill age, deposited during the Ordovician period hundreds of millions of years before human use of the site. This solid geological foundation would have provided stable ground for the construction of troughs and working areas associated with the burning activities.
Ffynnon Mary Burnt Mound is protected by Cadw, the heritage protection service for Wales, under the reference BR420, recognising its archaeological importance and prehistoric significance. The monument contributes to our understanding of domestic and economic life during the Bronze Age and Iron Age periods in upland Wales.
Ffynnon Mary Burnt Mound 300m SE of Carn Wen is a scheduled monument protected by Cadw under reference BR420. View the official record →
Ffynnon Mary Burnt Mound is a prehistoric burnt mound situated 300 metres south-east of Carn Wen in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference BR420.
Ffynnon Mary Burnt Mound 300m SE of Carn Wen dates from the prehistoric period, and is classified as a burnt mound. It is one of over 32,000 scheduled monuments protected across the UK.
Ffynnon Mary Burnt Mound 300m SE of Carn Wen 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 BR420.
Several scheduled monuments lie within 10 km, including Ringwork near Coed Ty-Mawr (2.6 km), Earthworks SW of Church (4.8 km), Standing Stone SSE of Dol-y-Felin (5.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Ffynnon Mary Burnt Mound 300m SE of Carn Wen'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.
Ffynnon Mary Burnt Mound 300m SE of Carn Wen stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.