Ancient Monuments

History on the Ground

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Caer Euni Stone Circles

A Scheduled Monument in Llandderfel, Gwynedd

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Latitude: 52.9568 / 52°57'24"N

Longitude: -3.5009 / 3°30'3"W

OS Eastings: 299272

OS Northings: 340992

OS Grid: SH992409

Mapcode National: GBR 6J.KN36

Mapcode Global: WH66V.6Y53

Entry Name: Caer Euni Stone Circles

Scheduled Date:

Source: Cadw

Source ID: 2462

Cadw Legacy ID: ME040

Schedule Class: Religious, Ritual and Funerary

Category: Kerb cairn

Period: Prehistoric

County: Gwynedd

Community: Llandderfel

Traditional County: Merionethshire


The monument comprises the remains of two cairn circles, which probably date to the Bronze Age (c. 2300 - 800 BC). The northern kerb cairn circle is the larger of the two, comprising 22 large boulders with a circumference measuring approximately 45 meters. Excavations in 1971 revealed a ring of boulders, surrounding a level stone built platform, beneath which was a layer containing pottery, charcoal and flints; suggesting an occupation site that was replaced by a ritual, sepulchral monument. The southern cairn circle comprises three concentric rings of boulders, with cairn material in between. The centre is a level area, approximately 3.2 meters in diameter and is occupied by a single slab of earthfast rock. The two outer circles retain only a few boulders, but the inner circle is nearly complete.

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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