Ancient Monuments

History on the Ground

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Clo Cadno platform cairn

A Scheduled Monument in Llangynidr, Powys

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Latitude: 51.8387 / 51°50'19"N

Longitude: -3.2892 / 3°17'21"W

OS Eastings: 311273

OS Northings: 216347

OS Grid: SO112163

Mapcode National: GBR YT.V8RX

Mapcode Global: VH6CL.X1ZT

Entry Name: Clo Cadno platform cairn

Scheduled Date: 18 January 2007

Source: Cadw

Source ID: 4299

Cadw Legacy ID: BR372

Schedule Class: Religious, Ritual and Funerary

Category: Platform Cairn

Period: Prehistoric

County: Powys

Community: Llangynidr

Traditional County: Brecknockshire


The monument comprises the remains of a platform cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated on a NW-facing terrace below the prominent summit of Clo Cadno and above the crags of Darren Clog Fawr, with fine views over the surrounding landscape. The stone-built cairn is circular on plan and measures about 13m in diameter and up to 0.4m in height. Although it has been disturbed in the past - it has an uneven and pitted surface - the majority of the base of the cairn appears to remain intact. The cairn displays no evidence of original 'bulk' and a well-defined kerb is occasionally visible; it is thus interpreted as a low platform cairn.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. 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 structural evidence and intact burial or ritual deposits. The likelihood that the cairn is an example of a more unusual structural class of cairn, the platform cairn, further increases its importance.

The scheduled area comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 28m in diameter.

Source: Cadw

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