Building Giants

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.

Genre:

Documentary, Reality

Seasons:

5

Episodes:

39

Cast:

Quality:

HD

Duration:

45 min

First Air:

2018

Rating:

7.7