What is recorded here
The National Monuments Record of Wales records Allt-Ddu Slate Quarry, Llanddeiniolen as Slate Quarry from the 18th Century; 19th Century period. The saved point comes from the official national record. Inclusion does not by itself mean that the public may enter the place.
The historic-place record does not grant public access. Check current conditions and ownership before entering land or a building.
Places near here
Cofeb y Chwarelwyr - Quarrymen's Memorial at Allt-DduHeritage place · 155 yd
Dinorwig Quarry Slate TipsOld home or work place · 258 yd
Approaching the western inner fence of the quarryOld home or work place · 272 yd
Incline, Dinorwic QuarryInclined Plane · 621 yd
Dali's HoleCliff · 691 yd
Sessile oak forest at Coed ChwaralForest or wood · 769 yd
Woodland above Barics Gwyr MonForest or wood · 779 yd
Sinc GaledCliff · 816 yd
Palm trees a thousand feet up a Welsh mountainMountain or hill · 866 yd
Vivian Quarry Entrance Tunnel (Aperture)Tunnel · 971 yd
Coal Staithes at the National Slate MuseumHeritage place · 1003 yd
Old Quarry HospitalMuseum · 1021 yd