Ancient Monuments

History on the Ground

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Round Cairn with Cist on Mynydd Drumau

A Scheduled Monument in Dyffryn Clydach, Neath Port Talbot (Castell-nedd Port Talbot)

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Latitude: 51.6876 / 51°41'15"N

Longitude: -3.8465 / 3°50'47"W

OS Eastings: 272451

OS Northings: 200372

OS Grid: SN724003

Mapcode National: GBR H1.4TD8

Mapcode Global: VH4JZ.8VV5

Entry Name: Round Cairn with Cist on Mynydd Drumau

Scheduled Date: 7 December 1976

Source: Cadw

Source ID: 3566

Cadw Legacy ID: GM387

Schedule Class: Religious, Ritual and Funerary

Category: Round cairn

Period: Prehistoric

County: Neath Port Talbot (Castell-nedd Port Talbot)

Community: Dyffryn Clydach

Traditional County: Glamorgan


The monument comprises the remains a burial cairn, probably dating to the Bronze Age (c. 2300 - 800 BC). It stands 250m above OD on the ridgeway that runs across the top of Mynydd Drumau. The cairn is circular and measures approximately 15m in diameter and 0.6m high. Near the centre is a slab built cist, the southern slab of which, together with the cover slab is now missing. The cist must originally have been about 1.20m by 0.8m. The site was first recorded by Edward Llwyd in 1695 when it apparently still retained a revetment circle of large stones. An excavation in the early 19th century produced 'a heap of bones and an ancient celt, very much corroded'.

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 intact burial or ritual deposits, together with environmental and structural evidence. Cairns may be 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.

Source: Cadw

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