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Cof Cymru: National Historic Assets of Wales · Wales

Trellwyn Fawr, Standing Stone 60m WSW of

Cwm Gwaun, Pembrokeshire, Wales

A scheduled monument in Cwm Gwaun, Pembrokeshire, recorded as Standing Stone (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Standing Stone, Cwm Gwaun, Pembrokeshire, 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
Standing Stone
Period
Prehistoric
Date of designation
15 November 2005
Community
Cwm Gwaun
Unitary authority
Pembrokeshire
Country
Wales
Coordinates (centre of the scheduled area)
51.98465, -4.91191
SAM number
PE505
Cadw record number
1148

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)
  • 1891 · Sheet 10. Ordnance Survey of England and Wales. . (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 210 Cardigan (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 210 Cardigan (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 13. (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.

This fine standing stone, originally part of a standing stone pair, is located in an enclosed field of permanent pasture on a gentle S facing slope with fine views over the Cwm Gwaun valley to the SE. It probably dates to the Bronze Age (c. 2300 BC - 800 BC). The stone is well preserved, upright and earthfast. It measures 1.6m tall, 1.0m wide and 0.5m deep. It is oriented NE-SW and tapers to a flattened tip.

The standing stone is of national importance for its potential to enhance our knowledge of prehistoric ritual practices. Such standing stones are assumed to have had some form of religious or ceremonial function. It represents a notable element in the wider prehistoric and funerary landscape. The monument retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

The area to be scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 10m in diameter.

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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