• Cymraeg
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    Diffwys and Maen-offeren Slate Quarries, view from east. Oblique aerial photograph taken during the Royal Commission’s programme of archaeological aerial reconnaissance by Toby Driver on 20 April 2018.Further Information
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    NPRNTitleType Of SiteCollectionsImages
    NPRN416213TitleDiffwys Casson Slate Quarry, Blaenau FfestiniogType Of SiteSLATE QUARRYCollections4Images3