RCAHMW colour oblique aerial photograph of Maen-Offeren Slate Quarry, Blaenau Ffestiniog, viewed from the west. Taken on 21 November 2005 by Toby DriverDownload and purchase options
NPRNTitleType Of SiteArchivesImagesNPRN400427TitleMaenofferen Slate Mine, Blaenau Ffestiniog (Maen-Offeren; Maen y Fferem; Maen Offeren)Type Of SiteSLATE QUARRYArchives146Images136