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Latitude: 52.7846 / 52°47'4"N
Longitude: -4.0936 / 4°5'37"W
OS Eastings: 258898
OS Northings: 322836
OS Grid: SH588228
Mapcode National: GBR 5R.XN2G
Mapcode Global: WH56D.28XL
Entry Name: Dyffryn Burial Chamber
Source ID: 3192
Cadw Legacy ID: ME003
Schedule Class: Religious, Ritual and Funerary
Category: Chambered long cairn
Community: Dyffryn Ardudwy
Built-Up Area: Tal-y-bont
Traditional County: Merionethshire
The monument consists of the remains of a chambered long cairn and a hut circle settlement (the foundations of round houses, an enclosure, terraces and clearance cairns). The chambered long cairn probably dates to the early Neolithic (c. 4,200BC - 3,000BC) and the settlement to the Bronze Age or Iron Age (c.2300 BC - AD 74). A long cairn is a roughly rectangular or trapezoidal mound of stone, usually between 25m and 120m long, with a length exceeding twice its greatest width. The mound may be edged with a timber or stone revetment, and they contain one or more stone or wooden burial chambers at one end.
Dyffryn Ardudwy, lying within the village of the same name, is one of the largest Neolithic ritual monuments in north Wales and was excavated between 1961 and 1962. Some ritual and funerary material was discovered during these excavations. The monument consists of two east-west oriented portal dolmen-type chambers which are set within a well defined large trapezoidal cairn. The cairn is constructed of rounded boulders and measures 28m in length and 15m wide and aligned southwest to northeast. The 1960s excavations revealed two clear construction phases; the first monument phase, the western chamber, comprises a rectangular stone chamber, 2.5m wide and 1m in depth which is closed off with a blocking slab. Both the chamber and the eastern forecourt area were enclosed by an oval cairn measuring c. 9m in length and with a maximum width of 8.5m. This cairn is completed enclosed by the later large trapezoidal cairn. East of the blocking slab are the remains of a well defined V-shaped forecourt. The larger eastern chamber is located 10m to the northeast of its western counterpart and also has its forecourt oriented towards the east.
The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices (the chambered long cairn) and prehistoric domestic life and social organisation (the hut circle settlement). It retains significant archaeological potential, with a strong probability of the presence of structural evidence and associated archaeological features and deposits. The features are an important relic of a prehistoric funerary and ritual landscape and their importance is further enhanced by their group value.
The scheduled area comprises the remains described and areas around them.
Other nearby scheduled monuments