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Adpar Castle Mound is a medieval motte located in Wales and protected as an ancient monument by Cadw under reference CD104. The mound rises from bedrock of Ashgill formation rocks, a sequence of mudstone, siltstone and sandstone deposited during the Ashgill period of the Ordovician. This geological foundation provided a stable base for medieval construction, with the underlying sedimentary strata offering suitable ground for the earthwork's substantial build.
The motte exemplifies the castle form prevalent across medieval Wales and the Marches, where lords established control through these distinctive fortifications. The mound itself represents an investment in both labour and engineering, raised above the surrounding terrain to command local landscape and communication routes. Such mottes frequently served as strongholds during the period of Anglo-Norman consolidation and Welsh resistance across the region.
The monument survives as a testament to medieval military architecture adapted to Welsh terrain. The Ashgill bedrock beneath the site would have presented both opportunities and constraints for the original builders, whilst the mound's preservation demonstrates the durability of earthwork defences constructed with understanding of local soil and stone conditions. Adpar Castle Mound remains an important example of medieval settlement strategy in this part of Wales.
Adpar Castle Mound is a scheduled monument protected by Cadw under reference CD104. View the official record →
Adpar Castle Mound is a medieval motte located in Wales and protected as an ancient monument by Cadw under reference CD104.
Adpar 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.
Adpar 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 CD104.
Several scheduled monuments lie within 10 km, including Crug Gorllwyn Round Barrow (7 km), Nant Sais Round Barrow (7.7 km), Carreg Wen Standing Stone (8.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Adpar 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.
Adpar Castle Mound stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.