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Cof Cymru: National Historic Assets of Wales · Wales

Cwm Rhiwiau Stone Circle

Llangynog, Powys, Wales

A scheduled monument in Llangynog, Powys, recorded as Stone Circle (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Cwm Rhiwiau Stone Circle, Llangynog, Powys, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Stone Circle
Period
Prehistoric
Date of designation
30 March 2001
Community
Llangynog
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.86423, -3.39883
SAM number
MG263
Cadw record number
130

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 136 Bala (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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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 stone circle, which probably date to the Bronze Age (c. 2300 - 800 BC) and is located on a plateau overlooking the larger Rhos-y-beddau stone circle complex to the south. The circle is more oval in plan and measures 11.4m N-S by 10.4m E-W defined by 12 small upright edge set stones which project from 0.12 to 0.4m above the present ground surface. Close to the circle are two outlying stones, one 3m to the north, the other 20m south of it which could be forming a significant alignment.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The features are an important relic of a prehistoric funerary and ritual landscape and retain significant archaeological potential. There is a strong probability of the presence of both intact ritual and burial deposits, together with environmental and structural evidence. Stone circles are often 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. It is a rectangle measuring 50m x 30m.

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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