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Lower Min-y-Llyn Castle Mound is a medieval motte situated on Caradocian bedrock of mudstone, siltstone and sandstone. The mound rises prominently from the surrounding terrain, a characteristic defensive earthwork of the Norman period built to command the landscape. Its position takes advantage of the underlying geology, with the firm Caradoc Rocks providing a stable foundation for the substantial earthen rampart that forms the castle's principal feature.
The motte represents a common defensive strategy of medieval Wales, where such fortifications served as centres of lordship and control. Though no bailey is recorded at this location, the mound itself would have supported a timber palisade and fighting platform at its summit, with a tower or residential structure. The castle's name references the nearby landscape, suggesting its integration within the local topography and settlement pattern.
Today the mound survives as a well-defined earthwork, protected by Cadw as a scheduled ancient monument. It stands as physical evidence of the medieval military architecture that shaped post-Conquest Wales, its survival dependent upon the resistant geology beneath and the preservation of its earthen form across centuries.
Lower Min-y-Llyn Castle Mound is a scheduled monument protected by Cadw under reference MG130. View the official record →
Lower Min-y-Llyn Castle Mound is a medieval motte situated on Caradocian bedrock of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference MG130.
Lower Min-y-Llyn 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.
Lower Min-y-Llyn 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 MG130.
Several scheduled monuments lie within 10 km, including Cefn Llan Hillfort (6.2 km), Offa's Dyke: Section from Dudston Covert, Lymore to Lack Brook, Churchstoke (7.4 km), Mount Pleasant Enclosure (7.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Lower Min-y-Llyn 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.
Lower Min-y-Llyn Castle Mound stands on Caradoc Rocks (Undifferentiated), bedrock that formed in the Caradocian. The rock here is mudstone, siltstone and sandstone.