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Cof Cymru: National Historic Assets of Wales · Wales

Caer Euni Stone Circles

Llandderfel, Gwynedd, Wales

The record

Designation
Scheduled monument
Site type
Ring Cairn
Period
Bronze Age
Community
Llandderfel
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.95681, -3.50089
SAM number
ME040
Cadw record number
2462

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

The monument comprises the remains of two cairn circles, which probably date to the Bronze Age (c.2300 - 800 BC). They are situated on top of the NE-SW ridge of Cefn Caer Euni, either side of a trackway that runs along the ridge.

The northern kerb cairn circle is the larger of the two, comprising 22 large boulders with a diameter of 10 metres and a circumference measuring approximately 45 metres. Excavations in 1971 and 1972 revealed a ring of boulders, surrounding a rectangular wooden structure, which was demolished when the central area was filled with a level platform of stone. Beneath this was a layer containing pottery, charcoal and flints; suggesting an occupation site that was replaced by a ritual, sepulchral monument.

The southern cairn circle comprises three concentric rings of boulders, with cairn material in between. The outermost ring is 9m in diameter. The centre is a level area, approximately 3.2 metres in diameter, occupied by a rectangular arrangement incorporating a slab of natural bedrock and a pit, which at the time of excavation was found to be filled with black earth and stones. The two outer circles retain only a few boulders, but the inner circle is nearly complete.

The monument is of national importance for its enhancement of our knowledge of prehistoric burial and ritual practices. The features are an important relic of a prehistoric funerary and ritual landscape. Cairns may be part of a larger cluster of monuments and their importance can be further enhanced by their group value, the hillfort of Caer Euni lies some 700m to the NE.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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