Allt Ddu

aka Chwarel Fawr, Adelaide, or Chwarel (Gloddfa) Griffiths Ellis

Slate Quarry

Jan 1st, 2024 from GWSI by Buddle-Bot

Nov 19th, 2025 by BertyBasset



Jun 1979 - Disused quarry near Dinorwic Village. Looking NW.
North Wales
Dinorwig
53.127491, -4.1072588
SH 5910 6100
Private Land
290m
#1,268


Largely landscaped, leaving only a reconstructed powder house. Several quarry houses remain occupied. The rail connection to Dinorwig mill is still visible as footpath.



The quarry was worked as a hillside pit before 1771 and was later absorbed into the Dinorwig complex in 1809, though it continued to operate as a separate department. Mill operations ceased after 1870, with all slate thereafter transported by rail to the adjacent Dinorwig mill.


Publications (1)

  • Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968


Jun 1979 - Disused quarry near Dinorwic Village. Looking NW.



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