Ancient Monuments

History on the Ground

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Cefn Clawdd Cairn

A Scheduled Monument in Merthyr Cynog, Powys

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Latitude: 52.0548 / 52°3'17"N

Longitude: -3.413 / 3°24'46"W

OS Eastings: 303213

OS Northings: 240541

OS Grid: SO032405

Mapcode National: GBR YN.DN1T

Mapcode Global: VH6BC.SMK5

Entry Name: Cefn Clawdd Cairn

Scheduled Date: 15 November 1993

Source: Cadw

Source ID: 1813

Cadw Legacy ID: BR204

Schedule Class: Religious, Ritual and Funerary

Category: Cairn

Period: Prehistoric

County: Powys

Community: Merthyr Cynog

Traditional County: Brecknockshire


The monument comprises the remains of a round cairn, which probably dates to the Bronze Age (c. 2300 - 800 BC) which is situated on a small hillock on the western part of Cefn Clawdd, 420m above sea level. This low round cairn is 12m in diameter and up to 0.6m in height with a significant amount of stone evident on its surface.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The features are an important relic of a prehistoric funerary and ritual landscape and retain significant archaeological potential. There is a strong probability of the presence of both intact ritual and burial deposits, together with environmental and structural evidence. Cairns may be part of a larger cluster of monuments and their importance can further enhanced by their group value.

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

Source: Cadw

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