Out Of The Blue Artifacts A Library of a lifetime of collecting
Rhiw Colbren Coal Level.
The map, a portion of an official N.C.B. abandonment map shows a small section of the Rhiw Colbren underground workings in the Red Ash coal seam.
Rhiw Colbren Coal Level.
The map, a portion of an official N.C.B. abandonment map shows a small section of the Rhiw Colbren underground workings in the Red Ash coal seam.