Cloddfa'r Lon Twll Mawr
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Cloddfa'r Lon Twll Mawr
Cloddfa'r Lon Twll Mawr in Gwynedd, Llanllyfni.
Cloddfa'r Lon Twll Mawr
Land use
quarry
Gallt-y-fedw Slate Quarry
Cloddfa'r Lon Twll Ballast
Pen-y-bryn Slate Quarry
Incline
Dorothea Slate Quarry
Bryn-deulyn
Tai Nantlle
Ty Mawr
Poblado Coffi