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Cof Cymru: National Historic Assets of Wales · Wales

Winding Drumhouse

Llanllyfni, Gwynedd, Wales

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
53.05925, -4.22666
Cadw reference
23736

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

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 to the south-east of the slate mill on Level IV of Pen-yr-Orsedd Slate Quarry above the remains of the incline leading down to the start of the former Nantlle Railway below.

Drumhouse of the late 1860s or early 1870s. 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.

Drumhouse constructed of sawn slate blocks with gable-ended slate roof. The lower sections of the side walls supporting the drum axle are wider and of more massive construction than the upper sections which support the roof only. Remains of adjoining slate-built structures to south-east and south-west.

The drum survives with its brake mechanism.

Listed as a good example of a slate quarry incline drumhouse forming part of a well-preserved group of quarry structures at Pen-yr-Orsedd Slate 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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