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Cof Cymru: National Historic Assets of Wales · Wales

North Weir and Smoke Tower, Ynys Gorad Goch

Llanfair Pwllgwyngyll, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Fish Weir
Period
Post Medieval/Modern
Community
Llanfair Pwllgwyngyll
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.21867, -4.18097
SAM number
AN096
Cadw record number
258

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1896 "Sheet 7. Ordnance Survey of England and Wales." (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.

Ynys Gorad Goch consists of two small islands, the larger one containing a house and the smaller a rectangular building with a smoke tower at one end; the two islands are linked by a stone causeway.

Two stone walls (the weirs) curve round the SE and NW sides of the islands, forming funnel-shaped areas into which fish are swept when the tide is flooding. The fish were retained in the traps by the force of the tide and by upward-sloping grilles situated across the narrow openings. When the tide fell, the water escaped through holes in the S wall, leaving the fish stranded in a small pool, where they were netted from stone walk-ways. Surmounting the wall is a concrete railing imitative of an earlier wooden railing. The present fish traps appear to be of early 19th century date, although fishing has been carried out on this site at least since the 16th century.

The smoke tower is probably of early 19th century date, and was used for smoking the catch. The tower is nearly square, set at the NW end of a rectangular building which has an extension (possibly of the mid 19th century) on the SW. The rectangular building measures 5.5 m by 3.8 m, with walls 0.5 m thick; it has a slate roof with modern timbers. There is one door in the SE gable and another in the SW side, leading into the extension. There is a window in the NE wall. The tower measures 1.8 m by 1.5 m, also with a slate roof, but with a hole in the top and a vent above, to let the smoke out. The extension is the full length of the rectangular building and about 2.7 m wide, with a two-seater privy at the W corner.

The monument is of national importance for its potential to enhance our knowledge of post-medieval fish and production industries. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structures themselves may be expected to contain archaeological information concerning chronology and building techniques.

The scheduled area comprises the smoke tower and building and three-quarters of the Anglesey (NW) weir, which was rebuilt in 1924.

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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