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Cof Cymru: National Historic Assets of Wales · Wales

Bryn Dinas Cairn

Tywyn, Gwynedd, Wales

A scheduled monument in Tywyn, Gwynedd, recorded as Round Barrow (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Bryn Dinas Cairn, Tywyn, 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 Barrow
Period
Prehistoric
Date of designation
17 February 2003
Community
Tywyn
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.57710, -4.01055
SAM number
ME232
Cadw record number
3995

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)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (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 comprises the remains of a round barrow, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated within rough grazing on the SW end of the Bryn Dinas ridge. The grass-covered earth and stone barrow is circular on plan and measures 5m in diameter and up to 0.6m in height. There is a fine exposed cist in the centre of the cairn, measuring 1.2m in length from NW to SE by about 0.7m transversely and 0.5m in depth. The orthostat that would have formed the SW side of the cist has been removed.

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 the presence of both intact secondary burial or ritual deposits and environmental and structural evidence, including a buried prehistoric land surface.

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 15m 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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