Ancient Monuments

History on the Ground

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Mountain Burial Chamber

A Scheduled Monument in Mynachlog-Ddu (Mynachlog-ddu), Pembrokeshire (Sir Benfro)

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Latitude: 51.9638 / 51°57'49"N

Longitude: -4.6712 / 4°40'16"W

OS Eastings: 216576

OS Northings: 232852

OS Grid: SN165328

Mapcode National: GBR CZ.LFYY

Mapcode Global: VH2N7.ZWCX

Entry Name: Mountain Burial Chamber

Scheduled Date: 31 May 1927

Source: Cadw

Source ID: 992

Cadw Legacy ID: PE039

Schedule Class: Religious, Ritual and Funerary

Category: Chambered tomb

Period: Prehistoric

County: Pembrokeshire (Sir Benfro)

Community: Mynachlog-Ddu (Mynachlog-ddu)

Traditional County: Pembrokeshire


The monument comprises the remains of a chambered tomb, dating to the Neolithic period (c. 4,400 BC - 2,900 BC). Chambered tombs were built and used by local farming communities over long periods of time. There appear to be many regional traditions and variations in shape and construction.

A ruined burial chamber consisting of a large capstone lies mainly on the ground of a hedgebank, but is supported at its northern end by one side stone, with a further three side stones to the west of the capstone and hedgebank. The capstone extends through the hedgebank into a second field and measures 4m square. The mound that surrounds the burial chamber is at least partly natural with two stones which would seem to be outcrop, within its structure.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual. 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 and environmental and structural evidence, including a buried prehistoric land surface. Chambered tombs 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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