Building Giants

Season 4 Episode 3: Underground Mega Highway

An expert team of engineers use hi-tech explosions and state-of-the-art drilling rigs to tear through solid granite and build an 11-mile underground tunnel, one of the longest in the world.

Genre:

Documentary, Reality

Seasons:

5

Episodes:

39

Cast:

Quality:

HD

Duration:

45 min

First Air:

2018

Rating:

7.7