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Dolbenmaen Castle Mound is a medieval motte raised upon Ordovician felsic tuff bedrock in Wales. The castle represents a typical Norman earthwork fortification, with its prominent artificial mound providing both defensive elevation and visibility across the surrounding landscape. This class of monument became widespread throughout Wales and the English borderlands following the Norman conquest, serving as the stronghold of local lords and military commanders. The mound was constructed directly upon the ancient volcanic rocks that form the bedrock of this region, deposited during the Ordovician period over 400 million years ago. The site benefits from protected status under Cadw, the heritage organisation responsible for Wales's most important archaeological monuments. The geological foundation of felsic tuff, a hard volcanic material, would have provided a stable base for the substantial earthwork, whilst the surrounding terrain would have offered natural advantages for defence and territorial control. Like many Welsh mottes, this site preserves evidence of medieval power and settlement patterns in the region.
Dolbenmaen Castle Mound is a scheduled monument protected by Cadw under reference CN063. View the official record →
Dolbenmaen Castle Mound is a medieval motte raised upon Ordovician felsic tuff bedrock in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CN063.
Dolbenmaen Castle Mound dates from the medieval period, and is classified as a motte. It is one of over 32,000 scheduled monuments protected across the UK.
Dolbenmaen Castle Mound 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 CN063.
Several scheduled monuments lie within 10 km, including Cefn-Isaf Burial Chamber (3.2 km), Capel Gallt-Coed (4.5 km), Standing Stone N of Bettws Fawr (4.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Dolbenmaen Castle Mound'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.
Dolbenmaen Castle Mound stands on Unnamed Extrusive Rocks, Ordovician, bedrock that formed in the Ordovician. The rock here is felsic tuff.