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Impossible Engineering: Season 2

2x05 World's Longest Tunnel
TV-G

  • 2016-04-14T01:00:00Z on Science
  • 42m
  • United States
  • English
  • Documentary
Exploring how engineers move mountains to build the longest and deepest rail tunnel; a look at how 25 million tons of rock were moved to build this modern wonder.
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