Ancient Monuments

History on the Ground

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Pen y Crogben Round Barrow

A Scheduled Monument in Llanbrynmair (Llanbryn-mair), Powys

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Latitude: 52.527 / 52°31'37"N

Longitude: -3.6894 / 3°41'21"W

OS Eastings: 285489

OS Northings: 293467

OS Grid: SN854934

Mapcode National: GBR 99.FSC0

Mapcode Global: VH5BG.0RF5

Entry Name: Pen y Crogben Round Barrow

Scheduled Date:

Source: Cadw

Source ID: 3772

Cadw Legacy ID: MG105

Schedule Class: Civil

Category: Gallows

Period: Medieval

County: Powys

Community: Llanbrynmair (Llanbryn-mair)

Traditional County: Montgomeryshire


The monument comprises the remains of a circular rock-cut ditch c.56m in diameter, surrounding a low mound with central hollow. The monument probably originated as an earthen built round barrow, dating to the Bronze Age (c. 2300 - 800 BC). However, excavation and placename evidence also confirm its later use as a seventeenth-eighteenth century gibbet.

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. Despite previous exploratory investigations, there is a strong probability of the presence of further ritual and burial deposits, together with environmental and structural evidence. Barrows may be part of a larger cluster of monuments and their importance can further enhanced by their group value. In addition the barrow’s secondary use as a post-Medieval gibbet contributes to the social history of the area.

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 c.42m, centred on the barrow.

Source: Cadw

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