The only thought most passengers have about railway tunnels is how they spoil the view. Beyond our imagination is what it took to build them, even if we could bring ourselves to care.
This video offers some insight into the techniques employed by Victorian engineers to drive the many hundreds of tunnels which form part of our past and present railway network. It tells a tale of ingenuity, adaptability, determination and tragedy.
Click here to read more about the challenges of tunnel construction.
© Four by Three/Forgotten Relics 2015