Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Deep Navigation Colliery lamproom, photograph
Interior view of Deep Navigation lamproom showing safety check system (2 checks, one given in on descending pit and the other on ascending pit).
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.