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Cof Cymru: National Historic Assets of Wales · Wales

Mynydd Dyfnant Stone Alignment

Banwy, Powys, Wales

A scheduled monument in Banwy, Powys, recorded as Stone Alignment (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Mynydd Dyfnant Stone Alignment, Banwy, 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 Alignment
Period
Prehistoric
Community
Banwy
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.72991, -3.50424
SAM number
MG134
Cadw record number
2636

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 · 150 Dinas-Mawddwy (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 monument comprises the remains of a stone alignment, probably dating to the Bronze Age (c.2300 BC - 800 BC). The alignment stands on the southeast facing slopes of Mynydd Dyfnant in the Dyfnant Forest. It consists of eleven visible stones in a curving line, elements of which may have originally formed part of a stone circle or sepulchral structure. Most of the stones are recumbent, but the largest upright stands to a height of 1.6m and is leaning.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. It is an important relic of a prehistoric funerary and ritual landscape and retain significant archaeological potential, with a strong probability of the presence of both intact burial and ritual deposits and environmental and structural evidence. Stone alignments 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.

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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