Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Six Bells Colliery, photograph
View of miner Dai Williams (who later became a guide at Big Pit) looking at the fossil tree trunk (or 'sigillaria') found above the coal at Six Bells Colliery, while a roadway was being driven between Six Bells and Blaenserchen Collieries.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.