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Moel Eiddew is a platform cairn situated on bedrock of Llandovery age sandstone and conglomerate. This type of monument dates to the Neolithic or Early Bronze Age and consists of a flat or gently sloping platform constructed from stone, typically used for burial or ritual purposes. The underlying geology of interbedded sandstone and conglomerate would have provided readily available stone for construction, a practical consideration in prehistoric monument building across Wales.
The monument is positioned to take advantage of the local landscape and stone resources of its hilltop location. Platform cairns of this period represent a distinctive Welsh funerary tradition, though less common than round cairns. The monument's preservation and protection by Cadw under reference MG312 reflects its significance as a scheduled ancient monument.
The Llandovery rocks beneath Moel Eiddew are Ordovician in age, part of the solid geology that shaped settlement patterns across mid and south Wales during prehistory. The monument's survival on this upland site, combined with the durable nature of the local stone, has allowed it to remain a visible element of the prehistoric landscape today.
Moel Eiddew platform cairn is a scheduled monument protected by Cadw under reference MG312. View the official record →
Moel Eiddew is a platform cairn situated on bedrock of Llandovery age sandstone and conglomerate. It is designated a Scheduled Ancient Monument by Cadw under reference MG312.
Moel Eiddew platform cairn dates from the prehistoric period, and is classified as a platform cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Moel Eiddew platform 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 MG312.
Several scheduled monuments lie within 10 km, including Fron Goch hillfort (5.7 km), Yr Allor Cairn (5.8 km), Rhos-Dyrnog Standing Stone (5.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Moel Eiddew platform 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.
Moel Eiddew platform cairn stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is sandstone and conglomerate, interbedded.