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Glascoed Round Cairn is a prehistoric round cairn located in Wales and protected by Cadw under reference CN150. The monument sits upon bedrock of Lower Cambrian age, comprising sandstone and conglomerate strata laid down in the Early Cambrian period. This geological foundation, formed from ancient marine sediments, provides a hard, stable base typical of upland Welsh terrain where such burial monuments were commonly constructed.
Round cairns of this type were built during the Bronze Age as funerary monuments, with stones gathered from the surrounding landscape and mounded over inhumation or cremation burials. The Cambrian sandstones and conglomerates visible in the local geology would have provided suitable stone for construction. Over time, these monuments have weathered and settled upon their bedrock foundations, becoming characteristic features of the Welsh prehistoric landscape.
The cairn's survival to the present day, despite millennia of exposure to the elements and the chemical weathering processes affecting its Cambrian bedrock base, demonstrates the durability of such Bronze Age constructions. Its protection by Cadw recognises its importance as evidence of prehistoric burial practice and settlement patterns in Wales.
Glascoed Round Cairn is a scheduled monument protected by Cadw under reference CN150. View the official record →
Glascoed Round Cairn is a prehistoric round cairn located in Wales and protected by Cadw under reference CN150.
Glascoed Round Cairn dates from the prehistoric period, and is classified as a round cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Glascoed Round Cairn 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 CN150.
Several scheduled monuments lie within 10 km, including Enclosed Hut Circle West of Llwyn Bedw (6.9 km), Ystrad Rural Settlement (7.6 km), Hafod-y-Wern Long Hut (7.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Glascoed Round Cairn'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.
Glascoed Round Cairn stands on Lower Cambrian Rocks (Undifferentiated), bedrock that formed in the Early Cambrian. The rock here is sandstone and conglomerate, interbedded.