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Cof Cymru: National Historic Assets of Wales · Wales

Garreg Lwyd Enclosure 600m SE of Crosslane Cottages

Cefn Sidan, Carmarthenshire, Wales

A scheduled monument in Cefn Sidan, Carmarthenshire, recorded as Enclosure (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Garreg Lwyd Enclosure 600m SE of Crosslane Cottages, Cefn Sidan, Carmarthenshire, 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
Enclosure
Period
Prehistoric
Date of designation
8 November 1978
Community
Cefn Sidan
Unitary authority
Carmarthenshire
Country
Wales
Coordinates (centre of the scheduled area)
51.69522, -4.28582
SAM number
CM222
Cadw record number
2817

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 1636 map "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1637 · The fourth table of England. Cornub. Devonia, Somerset etc. (David Rumsey Map Collection, Stanford Libraries)
  • 1891 · Sheet 10. Ordnance Survey of England and Wales. . (David Rumsey Map Collection, Stanford Libraries)
  • 1920 · Sheet 100. Llanelly. (David Rumsey Map Collection, Stanford Libraries)
  • 1963 · Map No. 4 - Local Government Commission for Wales : [Definitive maps showing proposed… (National Library of Scotland)

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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.

The monument comprises the remains of a defended promontory enclosure, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales) and which is located on a west-facing spur formed from a natural rock crag which has wide views on three sides. The enclosure is a sub-circular area of approximately 0.4ha defended to the west and north by the natural steep slopes with bare rock scarps, and to the east and south by bivallate ramparts which consist of an inner bank 1m high internally, 2-3m high externally; a ditch, and an outer bank 1-1.5m high externally. The ditches are best preserved on the east side. The entrance is probably on the southwest.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

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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