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Gotthard Tunnel

The Gotthard Base Tunnel underneath the Swiss Alps will be the world's longest rail tunnel upon completion in 2015.

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  • Originally Aired January 1, 2006
  • Runtime 45 minutes
  • Content Rating United States of America TV-G
  • Created July 11, 2013 by
    Administrator admin
  • Modified July 11, 2013 by
    Administrator admin