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Cof Cymru: National Historic Assets of Wales · Wales

Yr Allor Cairn

Llanbrynmair, Powys, Wales

The record

Designation
Scheduled monument
Site type
Ring Cairn
Period
Prehistoric
Date of designation
25 July 1985
Community
Llanbrynmair
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.59025, -3.62744
SAM number
MG209
Cadw record number
356

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 Ancient Monument.

The monument comprises the remains of a ring cairn of earth and stone, which probably date to the Bronze Age (c. 2300 - 800 BC), situated on the summit of Newydd Fynyddog which measures 14m along its east-west axis and is 13m in width. The edge of the cairn is defined by twelve large boulders laid lengthwise and almost contiguous small stones form the body of the cairn and are visible on the surface between and around the large boulders. The largest of the boulders is some 2m in length. The northeast corner is severely disturbed by excavation leaving a hollow up to 1m depth.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The feature is an important relic of a prehistoric funerary and ritual landscape and retains significant archaeological potential. There is a strong probability of the presence of both intact ritual and burial deposits, together with environmental and structural evidence. Ring cairns may be part of a larger cluster of monuments and their importance can further enhanced by their group value.

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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