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Cof Cymru: National Historic Assets of Wales · Wales

Rhyd-Lydan Cromlech

Llangain, Carmarthenshire, Wales

The record

Designation
Scheduled monument
Site type
Burial Chamber
Period
Prehistoric
Community
Llangain
Unitary authority
Carmarthenshire
Country
Wales
Coordinates (centre of the scheduled area)
51.81896, -4.35304
SAM number
CM056
Cadw record number
2102

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 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (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 Ancient Monument.

The monument, also known as Myrddin's Quoit, comprises the remains of a prehistoric cromlech, probably dating to the Neolithic period (c. fourth to early third millennium BC). The area covered by the original designation was too large and offset. The scheduled area has been revised to make it smaller and centred on the visible archaeological remains. The stones are located c. 4.1m apart. The N stone is embedded into the E face of a NE-SW oriented field boundary. It measures c. 1.8m tall, 0.9m wide and 0.75m deep. It leans slightly to the NE. It is a squat stone, squarish in shape on plan and rising to a blunt point on the E face. The S stone measures c. 1.7m tall, 1m wide and 0.7m deep. It is oriented N-S and is roughly pentagonal in shape in section. It rises to a blunt point.

The monument is of national importance for its potential to enhance our knowledge of prehistoric ritual practices. The features are important relics of a prehistoric funerary and ritual landscape and retain significant archaeological potential, with a strong probability of the presence of 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 16m 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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