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Cof Cymru: National Historic Assets of Wales · Wales

Arenig Fawr Cairn

Llanycil, Gwynedd, Wales

A scheduled monument in Llanycil, Gwynedd, recorded as Round Cairn (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Arenig Fawr Cairn, Llanycil, 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
Scheduled monument
Site type
Round Cairn
Period
Prehistoric
Date of designation
29 August 2007
Community
Llanycil
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.91710, -3.74594
SAM number
ME257
Cadw record number
1176

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)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (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 Monument.

The monument, also known as Eglwys Glominog, comprises the remains of a large burial cairn, probably dating to the Bronze Age (c. 2300 BC - 800 BC). It is located on Moel yr Eglwys, the highest summit of the Arenig Fawr ridge and enjoys excellent all round views except to the NE and SW. The stone built cairn is circular in shape on plan and measures c. 1.5 in height. The edge of the cairn is clearly marked by a low kerb, except on the E side. The kerb measures a maximum of 0.3m tall and is 12m in diameter. The cairn material has spread beyond the original circumference and now measures c. 15m in diameter. The cairn material has been remodelled to include an Ordnance Survey triangulation pillar, a World War II United States Air Force memorial and two walkers' shelters.

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

The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 20m 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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