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Crugyn Amlwg, Mynydd Trebeddau is a prehistoric round barrow located in Wales and protected by Cadw as a scheduled ancient monument under reference CM034. The site occupies high ground on Mynydd Trebeddau, where the underlying bedrock comprises Llandovery Rocks—Ordovician sandstone and conglomerate layers formed during the early Palaeozoic era. This solid geological foundation would have provided a stable base for the barrow's construction.
Round barrows of this type typically served as burial monuments during the Bronze Age, though some may have had earlier origins. The barrow at Crugyn Amlwg represents an important marker of prehistoric settlement and funerary practice in upland Wales. Its placement on exposed moorland would have made it a conspicuous landmark visible across considerable distances, emphasising the status or significance of those interred within.
The monument survives today as a substantial earthwork feature within the upland landscape. Its preservation as a scheduled monument recognises its archaeological and historical importance as evidence of prehistoric communities who inhabited this region. The site contributes to our understanding of Bronze Age burial practices and the use of elevated terrain in Wales during the prehistoric period.
Crugyn Amlwg, Mynydd Trebeddau is a scheduled monument protected by Cadw under reference CM034. View the official record →
Crugyn Amlwg, Mynydd Trebeddau is a prehistoric round barrow located in Wales and protected by Cadw as a scheduled ancient monument under reference CM034.
Crugyn Amlwg, Mynydd Trebeddau dates from the prehistoric period, and is classified as a round barrow. It is one of over 32,000 scheduled monuments protected across the UK.
Crugyn Amlwg, Mynydd Trebeddau 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 CM034.
Several scheduled monuments lie within 10 km, including Crugiau Rhos-Wen (1.1 km), Crug y Bedw, S of Blaen-Rhyd-Fedw (1.4 km), Mynydd Llanfihangel Rhos-y-Corn Round Barrow (2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Crugyn Amlwg, Mynydd Trebeddau'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.
Crugyn Amlwg, Mynydd Trebeddau stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is sandstone and conglomerate, interbedded.