Ancient Monuments

History on the Ground

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Llyn y Tarw ritual complex

A Scheduled Monument in Caersws (Caersŵs), Powys

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Latitude: 52.5673 / 52°34'2"N

Longitude: -3.4393 / 3°26'21"W

OS Eastings: 302540

OS Northings: 297580

OS Grid: SO025975

Mapcode National: GBR 9M.C7W6

Mapcode Global: WH79Y.4QHQ

Entry Name: Llyn y Tarw ritual complex

Scheduled Date: 23 November 2000

Source: Cadw

Source ID: 1679

Cadw Legacy ID: MG258

Schedule Class: Religious, Ritual and Funerary

Category: Stone circle

Period: Prehistoric

County: Powys

Community: Caersws (Caersŵs)

Traditional County: Montgomeryshire


The monument comprises a group of associated funerary and ritual monuments, probably dating from the Bronze Age (c.2300 BC - 800 BC) and situated to the E of Llyn y Tarw, within open moorland on the upland plateau of Bryn y Fawnog. The group comprises a large stone circle, at least four small burial cairns and a small stone alignment.

The monument is of national importance for its potential to enhance our knowledge of prehistoric ritual practices. The monument is well preserved and is an important relic of a prehistoric funerary and ritual landscape. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The extensive surviving Bronze Age ritual landscape contained within this upland plateau - including several large round barrows, platform cairns and standing stones - further increases the importance of this central group.

The area to be scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 275m in diameter.

Source: Cadw

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