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Clawdd Du is a medieval defensive earthwork located in Wales, designated as a Scheduled Ancient Monument under the reference MM036. The structure consists of a substantial bank and ditch system that formed part of the fortified defences associated with medieval settlement and territorial control in the region. Dating to the medieval period, the earthwork represents the type of linear defensive construction employed during the establishment and maintenance of Welsh lordships and administrative centres. The monument's survival as an upstanding earthwork provides archaeological evidence for medieval patterns of settlement hierarchy and defensive strategy in Wales.
Clawdd Du is a scheduled monument protected by Cadw under reference MM036. View the official record →
Clawdd Du is a medieval defensive earthwork located in Wales, designated as a Scheduled Ancient Monument under the reference MM036.
Clawdd Du dates from the medieval period, and is classified as a town defences. It is one of over 32,000 scheduled monuments protected across the UK.
Clawdd Du 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 MM036.
Several scheduled monuments lie within 10 km, including Gaer 594m SW of Trellech Cross (8.5 km), Dovecot at Hygga Farm (8.8 km), Offa's Dyke: section on St Briavels Common, 230m north of Hudnalls Farm (9.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Clawdd Du'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.
Clawdd Du stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.