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Cof Cymru: National Historic Assets of Wales · Wales

West and south ranges of building at former quarrymen's barracks to north-west of Ty Mawr

Llanllyfni, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Agriculture and Subsistence
Date of designation
21 July 2000
Locality
Nantlle
Community
Llanllyfni
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.05674, -4.22713
Cadw reference
23748

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

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This record in Cadw's own full report ↗

Cadw's description

Located at the western end of Nantlle near the eastern entrance to the Dorothea Slate Quarry.

Built as cowhouse and outbuilding associated with barrack dwellings for quarrymen and possibly their families (or at least their male members) after substantial investment in the Pen yr Orsedd Quarry in the 1860s. Built in the local vernacular style, the barracks are thought to be the only such surviving buildings established outside the slate quarries themselves in North Wales. They are thus of considerable historical importance.

Complex consists of 2 long rectangular single-storey ranges aligned north-south, linked by dry slate boundary wall on north, eastern range serving as barracks and western as cowhouse with another boundary wall and later and lower range on south forming courtyard. Cowhouse of roughly coursed rubblestone and boulder construction; some repairs and alterations in squared slate slabs; slate roof. Original cowhouse building has 4 door openings, one with boarded double doors, one stable door and 2 to right with doors missing; 3 small windows, one with C19 horizontal sliding sash; slate lintels throughout and integral end stack to right-hand end, which like the corresponding section to the east (barracks) range appears to be an extension. Cobbled path in front with boulder-lined drain. South gable end has stable door to right and a small window to left with blocked opening directly above to apex. Attached to east of the south gable end is the southern boundary wall, pierced by wide gate-way with slate menhirs as gate-posts; roof of southern range sits directly on top of continuation of wall to east.

Cowhouse has nailed A-frame trusses with single purlins; cobbled floor.

Included as cowhouse and outbuilding associated with the rare purpose-built quarrymen's barracks built immediately adjacent to the slate quarry they served.

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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