Cof Cymru: National Historic Assets of Wales · Wales
Llanddona Fish Weir
Llanddona, Isle of Anglesey, Wales
A scheduled monument in Llanddona, Isle of Anglesey, recorded as Fish Weir (Post Medieval).
The record
- Designation
- Scheduled monument
- Site type
- Fish Weir
- Period
- Post Medieval
- Date of designation
- 31 October 2002
- Community
- Llanddona
- Unitary authority
- Isle of Anglesey
- Country
- Wales
- Coordinates (centre of the scheduled area)
- 53.30812, -4.14376
- SAM number
- AN137
- Cadw record number
- 3906
Slide toward Today to fade the historical sheet and see the modern map underneath.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).
Historical maps covering this location
- 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
- 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
- 1899 · 94 Beaumaris (Hills) (David Rumsey Map Collection, Stanford Libraries)
- 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
- 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)
Cadw's description
Summary description and reason for designation
The following provides a general description of the Scheduled Monument.
The monument consists of the well-preserved remains of a fish weir, dating to the medieval or post-medieval period. A fish weir is usually characterised by a foundation of stone topped with a fence or row of stakes, often with nets attached forming an enclosure within a river or harbour and used for catching, or holding, fish. Llanddona fish weir is crescent-shaped and comprises two slightly curving arms defined by spread banks of stone. The inner arm is some 120m in length and runs at 135 degrees from the shore; the outer extends to a length of 225m and runs in the reverse direction across the bay. The weir's simple form may indicate an early date within the local sequence. It is first recorded in Baron Hill Estate papers of the 17th century and is also marked on a chart of 1748.
It is of national importance for its potential to enhance our knowledge of medieval or post-medieval maritime agricultural practices. The monument is the better preserved of only two surviving weirs of this type in Gwynedd and 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
- Church of St DonaReligious, Ritual and Funeraryunder 1 mi
- RectoryDomesticunder 1 mi
- Hafod-WenDomesticunder 1 mi
- Pen-yr-AlltDomesticunder 1 mi
Other entries of the same register within about three miles of this one, by straight line.