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Cof Cymru: National Historic Assets of Wales · Wales

Maen Crwn standing stone

Penmaenmawr, Conwy, Wales

The record

Designation
Scheduled monument
Site type
Standing Stone
Period
Prehistoric
Date of designation
19 December 2003
Community
Penmaenmawr
Unitary authority
Conwy
Country
Wales
Coordinates (centre of the scheduled area)
53.25671, -3.90370
SAM number
CN340
Cadw record number
4061

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 Monument.

The monument comprises an impressive standing stone, probably dating to the Bronze Age (c.2300 BC - 800 BC). It is a massive glacial boulder, set on end and standing 2.1m in height and measuring 2.2m in thickness from NNE to SSW and 1m in width. There are several carvings on its NNE end: both the date 1862 and what may be an early Ordnance Survey star-shaped cut bench mark are clearly visible; there are also several further indistinct markings.

The monument is of national importance for its potential to enhance our knowledge of prehistoric ritual practices. The monument retains significant archaeological potential with a strong probability of associated archaeological features and deposits and forms an important element in the wider prehistoric funerary and ritual landscape.

The scheduled area comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 5m 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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