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Cwm-Meurig-Isaf Mound and Bailey Castle is a medieval motte constructed on bedrock of Llandovery mudstone, siltstone and sandstone. The monument sits upon geological foundations formed during the Llandovery period, which provided a naturally stable platform for its earthwork defences. Like other mottes of the period, the castle would have comprised a substantial raised mound serving as the stronghold's core, with associated defensive features arranged around its base.
The castle represents the Norman feudal system's imprint on the Welsh landscape, typical of the strategic fortifications established across Wales during and after the Norman conquest. Its location in the Cwm-Meurig valley reflects the military priorities of medieval commanders, who selected defensible positions commanding local territory. The Llandovery bedrock, though not particularly suited to dramatic hilltop placement, offered sufficient prominence and stability for the earthwork's construction.
The monument is protected by Cadw, Wales's historic monuments service, under reference CD031. Such motte and bailey castles are recognised as key evidence of medieval settlement patterns and power structures in Wales. The survival of Cwm-Meurig-Isaf as an earthwork monument preserves the physical layout of Norman military administration during the medieval period.
Cwm-Meurig-Isaf Mound and Bailey Castle is a scheduled monument protected by Cadw under reference CD031. View the official record →
Cwm-Meurig-Isaf Mound and Bailey Castle is a medieval motte constructed on bedrock of Llandovery mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference CD031.
Cwm-Meurig-Isaf Mound and Bailey Castle dates from the medieval period, and is classified as a motte. It is one of over 32,000 scheduled monuments protected across the UK.
Cwm-Meurig-Isaf Mound and Bailey Castle 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 CD031.
Several scheduled monuments lie within 10 km, including Bryngwyn Bach Round Cairn Cemetery (5 km), Carn Fflur Round Cairn Cemetery (6 km), Garn Gron Round Cairn Cemetery (7.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cwm-Meurig-Isaf Mound and Bailey Castle'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.
Cwm-Meurig-Isaf Mound and Bailey Castle stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.