Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Llanberis (Dinorwic) Slate Quarry, plan
Plan of Llanberis (Dinorwic) Slate Quarry Mueum. First and second floor plan. Sheet 4 of 7. Scale 1:100. Survey Job No. 24694. Surveyed by Plowman Craven & Associates July 1976
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.