Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Yielding stilt
Yielding stilts / ring stilts used as a supporting foot of a roof supporting arch in mine roadways.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Yielding stilts / ring stilts used as a supporting foot of a roof supporting arch in mine roadways.