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Cof Cymru: National Historic Assets of Wales · Wales

Hendrefor Earthwork

Cwm Cadnant, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Enclosure
Period
Roman
Community
Cwm Cadnant
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.26549, -4.18251
SAM number
AN075
Cadw record number
3271

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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.

A rectangular enclosure surrounded by a ditch between two banks, possibly dating to the Iron Age or Romano-British period (c.800BC to AD400). It is situated in a low-lying marshy field. The outer bank is clearly visible on the corners, but tends to disappear between. The inner bank has survived to a height of 0.1 m along its length, and higher at the corners; it is 3 - 4 m wide. There is an 8 m wide gap in the banks on the NE side which probably represents the entrance. The interior measures 50 m by 40 m where a low, near-circular mound roughly 10m across may represent a roundhouse site.

The monument is of national importance for its potential to enhance our knowledge of Iron Age or Romano-British defence and settlement. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structure itself may be expected to contain archaeological information concerning chronology and building techniques.

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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