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Cof Cymru: National Historic Assets of Wales · Wales

Henblas Burial Chamber

Llangristiolus, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Chambered Tomb
Period
Prehistoric
Community
Llangristiolus
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.22140, -4.35934
SAM number
AN003
Cadw record number
2503

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 a group of three very large blocks of stone that are situated on a level shelf, to the east of which the ground slopes sharply down to the Afon Cefni. Two of the stones are conical in shape and rest on their bases, being 4.1m and 3m in height with circumferences of 15.25m and 16.75m respectively. A third stone which leans against the first two measures 5.5m in height and 4.7m wide. It is almost certain that the position of the two upright stones is natural, but glacial striations on the underside of the third block indicate human intervention in its positioning. A fourth stone, 1.5m high, is said once to have stood four or five paces away on the E side, and may have formed part of an avenue of stones which is said to have led up to the main group. Cremations and associated artefacts are said to have been found close at hand. Although the group as a whole is mainly natural it may have been adapted for use as a burial place.

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.

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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