©
Comisiwn Brenhinol - Royal Commission: Llechwedd Quarries Slate Tips
©
Comisiwn Brenhinol - Royal Commission: Maenofferen Winding House Complex At The Top Of The Underground Incline
©
Comisiwn Brenhinol - Royal Commission: Saw Mill largest building at Maenofferen Slate Quarry
©
Comisiwn Brenhinol - Royal Commission: Maenofferen Slate Quarry