B
Billy Bob Bob
while out on me mountain bike with the family,this s long since disused cymmer viaduct,trains once run over it used to connect via a 1,595 yard tunnel Cymmer Tunnel i went for a walk up this as a sprog,bit dark to say the least,anyway it always fascinates me the old pieces of engineering are grandfathers made for example how did they do the viaduct? no cranes or modern machinery