Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Deep Navigation underground workings, plan
Full title - Harris' Deep Navigation. Plan shewing workings under Cefn-fforest Property. Scale two chains to an inch. Undated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.