Impossible Engineering

World's Longest Tunnel

Directed by Tim Williams
TV-G
S2 • E5    Apr 13, 2016    42m
7.2
How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder, the Gotthard Base Tunnel.

Where to Watch Impossible Engineering - S2 • E5

Cast of World's Longest Tunnel

  • Mike BrattonNarrator

 

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