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Cof Cymru: National Historic Assets of Wales · Wales

Cromlech

Llandwrog, Gwynedd, Wales

A Grade II listed building in Glynllifon, Llandwrog, Gwynedd, designated on 8 September 1998.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Cromlech, Llandwrog, Gwynedd, 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
Listed building, Grade II
Broad class
Domestic
Date of designation
8 September 1998
Locality
Glynllifon
Community
Llandwrog
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.07169, -4.30439
Cadw reference
20497

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 1795 map "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).

Historical maps covering this location

  • 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)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 118 Nevin (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Set in a rectangular hollow beside the drive through the plantations approximately 270m south of the house.

Said to have been erected by 2nd Lord Newborough and therefore before 1832 but is more likely to be the work of F G Wynn c1900. It was built as a mock druidical sanctuary.

Glynllifon was the seat of the Wynn family and Sir Thomas John Wynn became the 1st Lord Newborough in 1776. The house was rebuilt after a fire 1836-48 by Edward Haycock, architect of Shrewsbury.

Miniature cromlech of standard type of capstone carried on three monoliths. There was also formerly a tall standing stone to the side but this has now fallen over. Basin within the cromlech.

Included as one of the more unusual features within this especially fine C19 park at Glynllifon.

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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