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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6426971
    Disgrifiad
    From lift 'Lord' looking SW to NW quarry terraces, Penrhyn Slate Quarry, Water balance lift 'Edward'.
    Enw Casgliad
    Investigators' Photographs
    Cyfrwng
    Photo.
    Cychwynnwr
    Stephen R. Hughes
    Dyddiad
    2001-06