Ancient Monuments

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Plas Newydd Burial Chambers

A Scheduled Monument in Llanddaniel Fab, Isle of Anglesey (Ynys Môn)

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Latitude: 53.2038 / 53°12'13"N

Longitude: -4.2179 / 4°13'4"W

OS Eastings: 251962

OS Northings: 369711

OS Grid: SH519697

Mapcode National: GBR 5L.21XC

Mapcode Global: WH546.5QRR

Entry Name: Plas Newydd Burial Chambers

Scheduled Date:

Source: Cadw

Source ID: 2504

Cadw Legacy ID: AN005

Schedule Class: Religious, Ritual and Funerary

Category: Chambered tomb

Period: Prehistoric

County: Isle of Anglesey (Ynys Môn)

Community: Llanddaniel Fab

Traditional County: Anglesey


The monument comprises the remains of a chambered tomb, dating to the Neolithic period. 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.

The site comprises the remains of two burial chambers, the one to the north being considerably larger than its partner. The larger chamber has a massive capstone, 3.8m in length, 3.5m wide and 1.2m thick, which is supported on five orthostats. The north eastern end of the capstone rests on three of the uprights 1.4m above the ground and slopes down towards its south western end which is supported by the remaining two uprights. The capstone of the smaller chamber is broken, a large part of the north eastern end lies on the floor between the two chambers. The remaining section of the capstone measures 2m in length, 1.8m wide and is 0.6m thick; it is supported by three low uprights which are c. 0.7m in height. There are a number of fallen stones which may represent fallen uprights.

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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