He then visits Honister Slate Mine , near Keswick .
It includes a succession of hairpin bends and a 1 in 3 gradient , rising to 1,200 feet ( 370 m ) in little over a mile , and Rhys Jones travels it riding pillion on a motorcycle .
Rhys Jones then visits Honister Slate Mine , near Keswick .
It includes a succession of hairpin bends and a 1 in 3 gradient , rising to 1,200 feet ( 370 m ) in little over a mile , and Rhys Jones travels it riding pillion on a motorcycle .