Ancient Monuments

History on the Ground

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Cairns on Pen Plynlimon-Arwystli

A Scheduled Monument in Blaenrheidol, Ceredigion

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Latitude: 52.4751 / 52°28'30"N

Longitude: -3.7457 / 3°44'44"W

OS Eastings: 281525

OS Northings: 287782

OS Grid: SN815877

Mapcode National: GBR 96.K4F1

Mapcode Global: VH5BT.114Y

Entry Name: Cairns on Pen Plynlimon-Arwystli

Scheduled Date:

Source: Cadw

Source ID: 1841

Cadw Legacy ID: CD035

Schedule Class: Religious, Ritual and Funerary

Category: Round cairn

Period: Prehistoric

County: Ceredigion

Community: Blaenrheidol

Traditional County: Montgomeryshire


The monument comprises the remains of three burial cairns, probably dating to the Bronze Age (c. 2300 - 800 BC). The southernmost cairn is c.18m in diameter, c.62m in circumference and c.2m high, with a depression in the top. The central cairn, which lies c.20m to its north-east, is c.22m in diameter, c.70m in circumference and c.1.5m high. It is intact and has been used as beacon. The north-eastern cairn lies c.35m further to the north-east, is c.20m in diameter with an outer ring of loose stones around a turf-covered interior. The centre is of stone and has a large shelter constructed within it. The cairn stands 0.5 to 1.5m above its surroundings.

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 intact burial or ritual deposits, together with environmental and structural evidence. Cairns may be part of a larger cluster of monuments and their importance can be 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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