Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6145690Teitl94_CS_0719 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadRCAHMW colour slide oblique aerial photograph of Llechwedd Slate Quarries, Ffestiniog, taken by C.R. Musson, 17/04/94CyfrwngPhoto.DelweddauyRhif Archif6049647Teitl94_CS_0720 - RCAHMW Colour Oblique Aerial PhotographsLefelItemDisgrifiadSlide of RCAHMW colour oblique aerial photograph of Llechwedd Slate Caverns, taken by C.R. Musson, 17/4/1994.CyfrwngPhoto.DelweddauyRhif Archif6074296TeitlNMR Site FilesLefelItemDisgrifiadNewspaper article in the Western Mail, titled 'Quarrying deep into the tourist market', relating to Llechwedd Slate Caverns, Llandderfel, MerionethCyfrwngText.Delweddaun
