Prince Llewellyn quarry
slate quarry in the Lledr Valley, Conwy County Borough, Wales, United Kingdom
The Prince Llewellyn quarry (also known as Bwlch Cynnud quarry, Y Foel quarry, Hendre Ddu quarry, or Prince Llywelyn quarry) was a slate quarry that stands on the west side of the Lledr Valley, ENE of Dolwyddelan. It was worked from around 1820 to 1934.
History
Early years
The quarry opened around 1820, and was originally an open pit. The quarry was expanded in the 1840s. The road from Betws-y-Coed to Dolwyddelan was re-routed in 1846 to allow construction of a new quarry mill and Prince Llewelyn Terrace to house quarry workers. The new mill contained four horizontal sandsaws driven by a steam engine, which was later replaced with a 30 feet (9.1 m) waterwheel. An incline led down from the pit to the mill level.
Chwarel Fedw
In 1873, the quarry was owned by John Jones and employed about 40 men. The quarry was worked in conjunction with Chwarel Fedw on the east side of the valley. A tramway was built across the Afon Lledr to connect the two quarries and slate from Chwarel Fedw was taken across to the second mill for processing.
The public source identifies “Prince Llewellyn quarry” as slate quarry in the Lledr Valley, Conwy County Borough, Wales, United Kingdom. This brief keeps that definition visible, then builds a research path around Prince, Llewellyn and quarry.
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Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 7, 2026. The linked authority identifier is Q85794523. Authority coordinates are 52.976, -4.209. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1820, 1934, 1846 and 1873.
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This entry incorporates text from “Prince Llewellyn quarry” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.