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Cof Cymru: National Historic Assets of Wales · Wales

Perthi-Duon Burial Chamber

Llanidan, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Chambered Tomb
Period
Prehistoric
Community
Llanidan
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.17612, -4.27602
SAM number
AN059
Cadw record number
2527

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1883 "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

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.

The site comprises a ruined burial chamber, the vestiges of which are a capstone c.2.5 m long and 1.8 m wide lying on two fallen stones which are probably collapsed uprights. There are other stones which have been placed around the capstone.

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.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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