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Cof Cymru: National Historic Assets of Wales · Wales

Quarry Hospital

Llanllyfni, Gwynedd, Wales

A Grade II listed building in Pen-yr-Orsedd, Caernarfon, Llanllyfni, Gwynedd, designated on 21 July 2000.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Quarry Hospital, Llanllyfni, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
21 July 2000
Locality
Pen-yr-Orsedd
Town
Caernarfon
Community
Llanllyfni
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.06016, -4.22511
Cadw reference
23740

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "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).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 118 Nevin (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

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

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. The social concerns of the quarry company in the late C19 are evident in the existence of this building, which dates from this period, and in the quality of the barracks accommodation.

Single-storey rectangular plan building, aligned roughly north-west to south-east with gabled projection to centre on front. Uncoursed rubblestone with red brick dressings; gable-ended slate roofs, slates largely missing at time of Survey, and central brick stack. Lower central gabled projection has pair of door openings and small 2-light window above. Pair of windows flanking gable, each with 2-light casement and brick reveals.

Much of the original plasterwork survives intact.

Included as a well-preserved and rare example of a quarry hospital at the remarkable Pen-yr-Orsedd Slate Quarry complex, illustrating the social organisation of the quarry.

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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