Ancient Monuments

History on the Ground

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Garn Wen round cairn

A Scheduled Monument in Llanwrtyd Wells (Llanwrtyd), Powys

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Latitude: 52.1 / 52°6'0"N

Longitude: -3.6874 / 3°41'14"W

OS Eastings: 284513

OS Northings: 245975

OS Grid: SN845459

Mapcode National: GBR Y8.9ZZ3

Mapcode Global: VH5DL.1GGZ

Entry Name: Garn Wen round cairn

Scheduled Date: 12 September 2007

Source: Cadw

Source ID: 1109

Cadw Legacy ID: BR364

Schedule Class: Religious, Ritual and Funerary

Category: Round cairn

Period: Prehistoric

County: Powys

Community: Llanwrtyd Wells (Llanwrtyd)

Traditional County: Brecknockshire


The monument comprises the remains of a burial cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated in open moorland on the summit of Garn Wen, a hill on the SE side of Mynydd Trawsnant. The stone-built cairn is circular on plan and measures about 16m in diameter and up to 1.5m in height (on its SW side). Although it has been disturbed in the past - a large shelter has been created within its summit and a well preserved stone built triangulation pillar erected within - the majority of the base of the cairn appears to remain intact.

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 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 35m in diameter.

Source: Cadw

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