Visit to Llechwedd and Bounce Below 29/9/19
Y Pren ar y Bryn
RHOSYDD SLATE QUARRY, LEVEL 2 TO LEVEL 3 INCLINE
RHOSYDD SLATE QUARRY
CWMORTHIN CALVINISTIC METHODIST SUNDAY SCHOOL ...
CWMORTHIN SLATE QUARRY
CRAIG DDU QUARRY
BLAENAU FFESTINIOG
RHOSYDD SLATE QUARRY, LEVEL 4 TO LEVEL 9 LOWER...
FFESTINIOG PUMPED STORAGE SCHEME: FFESTINIOG...
HUT CIRCLE SETTLEMENT AT NANT DDU
FFESTINIOG PUMPED STORAGE SCHEME: LLYN STWLAN...
BRYN TEIGL
CRAIG-DDU INCLINE
MAENOFFEREN;MAEN-OFFEREN;MAEN Y FFEREM;MAEN...
MAENOFFEREN;MAEN-OFFEREN;MAEN Y FFEREM;...