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    Ynys Gron granite quarry and the town of Porthmadog. Oblique aerial photograph taken during the Royal Commission's programme of archaeological aerial reconnaissance by Toby Driver on 2nd October 2015.Download and purchase options
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    NPRNTitleType Of SiteArchivesImagesNPRN405432TitleGarth;Ynys Gron Granite Quarry, LlanfrothenType Of SiteGRANITE QUARRYArchives3Images3NPRN401385TitlePorthmadog TownType Of SiteTOWNArchives31Images16