Home / Series / Building Giants / Aired Order / Season 2 / Episode 6

Mega Mountain Tunnel

As engineers race to build a brand-new train tunnel beneath the Alps, they use cutting-edge tech and the latest construction methods to build the world's longest underground railroad in some of the most dangerous conditions on earth.

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  • Originally Aired September 11, 2019
  • Runtime 45 minutes
  • Network Science Channel
  • Created September 16, 2019 by
    Administrator admin
  • Modified September 16, 2019 by
    Administrator admin