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Barracks Building

A Grade II Listed Building in Llanllyfni, Gwynedd

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Latitude: 53.0602 / 53°3'36"N

Longitude: -4.2254 / 4°13'31"W

OS Eastings: 250960

OS Northings: 353749

OS Grid: SH509537

Mapcode National: GBR 5L.C61B

Mapcode Global: WH54Z.2B5V

Entry Name: Barracks Building

Listing Date: 21 July 2000

Last Amended: 21 July 2000

Grade: II

Source: Cadw

Source ID: 23739

Building Class: Industrial

Location: Located to the south-west of the quarry offices on Level VI (Bonc yr Offis) of Pen-yr-Orsedd Slate Quarry.

County: Gwynedd

Town: Caernarfon

Community: Llanllyfni

Community: Llanllyfni

Locality: Pen-yr-Orsedd

Traditional County: Caernarfonshire

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Barracks building, c1863. The quarry opened c1816 when it was worked by William Turner. In 1863 it was bought by W A Darbishire & Co., after which it underwent substantial modernisation, reflected in the use of both water and steam power. During the 1890s about 450 men worked here; it finally closed in 1997.


Single-storey barracks building of shallow double-depth T-plan with central gabled projection; slightly lower block to south-west. Squared and coursed slate stone with remains of some probably later slate hanging; gable-ended roofs with polychromatic slate banding; chimneys of sawn slate blocks, some rendered. Main range has front of 1:2 windows with remains of C19 sashes; small shallow pyramidal-roofed entrance porch in angle with central gabled projection has C20 door.


Much of the original lath and plasterwork survives.

Reasons for Listing

Listed as a good example of a barracks building at the remarkably well-preserved slate quarry of Pen-yr-Orsedd, part of a very extensive group of buildings serving the quarry and illustrative of its social organisation.

Other nearby listed buildings

  • II Quarry Offices
    Located between the store building to the north and the barracks to the south-west on Level VI (Bonc
  • II Quarry Hospital
    Located to the south-east of the quarry offices on Level VI (Bonc yr Offis) of Pen-yr-Orsedd Slate Q
  • II Store Building
    Located between the former slate mill to the north-east and the quarry offices to the south-west on
  • II Workshops
    Located to the south of the slate mill on Level VI (Bonc yr Offis) of Pen-yr-Orsedd Slate Quarry.
  • II Winding Drumhouse and Incline
    Located to the south-east of the slate mill on Level VI (Bonc yr Offis) of Pen-yr-Orsedd Slate Quarr
  • II Slate Mill
    Directly adjoining the slab mill to the south on Level IV (Bonc Isa') of Pen-yr-Orsedd Slate Quarry.
  • II Slab Mill
    Directly adjoins the large slate mill on Level IV (Bonc Isa') of Pen-yr-Orsedd Slate Quarry.
  • II Locomotive Shed
    Directly adjoins the drumhouse on Level IV (Bonc Isa') of Pen-yr-Orsedd Slate Quarry.

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