Ancient Monuments

History on the Ground

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Nant Gwynllyn Standing stone

A Scheduled Monument in Rhayader (Rhaeadr Gwy), Powys

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Latitude: 52.3153 / 52°18'54"N

Longitude: -3.568 / 3°34'4"W

OS Eastings: 293209

OS Northings: 269730

OS Grid: SN932697

Mapcode National: GBR 9G.W65V

Mapcode Global: VH5CP.32LG

Entry Name: Nant Gwynllyn Standing stone

Scheduled Date: 3 February 2003

Source: Cadw

Source ID: 3922

Cadw Legacy ID: RD196

Schedule Class: Religious, Ritual and Funerary

Category: Standing stone

Period: Prehistoric

County: Powys

Community: Rhayader (Rhaeadr Gwy)

Traditional County: Radnorshire


The monument comprises the remains of a standing stone, which probably dates to the Bronze Age (c. 2300 - 800 BC) and is situated at the head of the valley, approximately 30m south of Nant Gwynllyn. It is some 1.5m high, 2.0m wide and 0.4m thick, with the longer axis aligned east to west.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. It is an important relic of a prehistoric funerary and ritual landscape and retains significant archaeological potential. There is a strong probability of the presence of intact burial or ritual deposits, together with environmental and structural evidence. Standing stones are often 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. it is a circle and measures 5m in diameter, centred on the stone.

Source: Cadw

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