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Round Cairn and Ring Cairn South of Twyn-y-Glog is a prehistoric round cairn located in Wales, protected by Cadw as a scheduled ancient monument under reference GM523. The monument sits on bedrock of the Millstone Grit Group, a formation of mudstone, siltstone and sandstone laid down during the Namurian period. This geology would have provided suitable material for cairn construction, with stone naturally available in the immediate landscape.
Round cairns of this type are typically Bronze Age burial monuments, constructed as earthfast stone heaps to mark graves or ritual sites. The presence of an associated ring cairn at this location suggests a more complex arrangement than simple burial markers, possibly indicating multiple phases of use or ritual significance across the site.
The monument remains in situ and forms part of the broader archaeological record of prehistoric Wales, where cairns cluster in upland regions. The specific topography of Twyn-y-Glog and its position relative to other contemporary sites would have made it strategically or ritually important to its Bronze Age builders. The cairns survive today as testament to the durable construction practices of this prehistoric period.
Round Cairn and Ring Cairn South of Twyn-y-Glog is a scheduled monument protected by Cadw under reference GM523. View the official record →
Round Cairn and Ring Cairn South of Twyn-y-Glog is a prehistoric round cairn located in Wales, protected by Cadw as a scheduled ancient monument under reference GM523.
Round Cairn and Ring Cairn South of Twyn-y-Glog 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.
Round Cairn and Ring Cairn South of Twyn-y-Glog 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 GM523.
Several scheduled monuments lie within 10 km, including Tarren y Bwlch round cairn (5.5 km), Craig y Bwlch round cairn (5.5 km), Tramroad East of Robert's Town Bridge, Aberdare (6.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Round Cairn and Ring Cairn South of Twyn-y-Glog'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.
Round Cairn and Ring Cairn South of Twyn-y-Glog stands on Millstone Grit Group [See Also Migr], bedrock that formed in the Namurian. The rock here is mudstone, siltstone and sandstone.