Ancient Monuments

History on the Ground

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Mynydd Bychan platform cairn

A Scheduled Monument in Talgarth, Powys

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Latitude: 51.9809 / 51°58'51"N

Longitude: -3.171 / 3°10'15"W

OS Eastings: 319673

OS Northings: 232028

OS Grid: SO196320

Mapcode National: GBR YZ.K836

Mapcode Global: VH6BW.ZGHT

Entry Name: Mynydd Bychan platform cairn

Scheduled Date: 3 February 2006

Source: Cadw

Source ID: 4195

Cadw Legacy ID: BR320

Schedule Class: Religious, Ritual and Funerary

Category: Platform Cairn

Period: Prehistoric

County: Powys

Community: Talgarth

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 a W-facing spur of the NW side of the Black Mountains known as Mynydd Bychan. The grass-covered cairn is roughly circular on plan and measures about 9m in diameter and up to 0.5m in height. The cairn was possibly originally a platform cairn - the cairn displays no evidence of original 'bulk', while elements of a level surface are visible. The cairn is substantially intact and commands fine views.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The well-preserved 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 and environmental and structural evidence. 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 24m in diameter.

Source: Cadw

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