plas cwmorthin, terrace and rhosydd slate quarry, blaenau ffestiniog

abandoned bach back backpack blaenau blue climb countryside cwmorthin derelict disused dramatic epic ffestiniog grey gwynedd hydd industrial landscape llyn mawr mine moel moelwyn moelwynion moody mountain national nature north old outdoors panorama park quarry rhosydd rock ruin skies sky slate snowdonia tanygrisiau terrace tourism trek vein view vista wales walk walking welsh