Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Llanberis (Dinorwic) Slate Quarry, plan
Plan of Llanberis (Dinorwic) Slate Quarry Museum Elevations. Sheet 6 of 7 Date of Survey July 1976, Surveyed by Plowman Craven & Associates on behalf of Central Survey DCED. Survey Job No. 24694. Drawn by POA, Checked FJT. Scale 1:100.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.