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Llangwathan Castle Mound is a medieval motte situated in Wales, constructed upon bedrock formed from Llanvirn rocks of the Whiterock period, comprising mudstone, siltstone and sandstone. This underlying geology provided a naturally stable foundation for the earthwork's construction. The motte represents a common form of early medieval fortification, designed as a raised defensive stronghold with commanding views across the surrounding landscape. Such mottes typically served as centres of local authority and territorial control.
The mound rises prominently from the surrounding terrain, its earthen construction built to maximise the defensive advantage of elevation. The composition of the underlying strata—alternating layers of sedimentary stone—would have influenced both the structural integrity of the motte and the ease of its construction, as the softer mudstone and siltstone deposits could be worked more readily than harder rock formations. The site's geology thus shaped both the feasibility of medieval fortification and its long-term stability.
Llangwathan Castle Mound is protected as a monument of national importance under Cadw reference PE434, recognising its significance to Welsh medieval heritage. The motte stands as testament to the medieval settlement and defensive strategies employed across Wales, preserving in its earthwork form the engineering practices and territorial organisation of its period.
Llangwathan Castle Mound is a scheduled monument protected by Cadw under reference PE434. View the official record →
Llangwathan Castle Mound is a medieval motte situated in Wales, constructed upon bedrock formed from Llanvirn rocks of the Whiterock period, comprising mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference PE434.
Llangwathan 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.
Llangwathan 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 PE434.
Several scheduled monuments lie within 10 km, including Blaengwaith-Noah Camp (3.4 km), Castell Meherin Camps (3.8 km), Sentence Castle Mound (4.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Llangwathan 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.
Llangwathan Castle Mound stands on Llanvirn Rocks (Undifferentiated), bedrock that formed in the Whiterock. The rock here is mudstone, siltstone and sandstone.