4 Season
29 Episode
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.
- Year: 2020
- Country: United Kingdom, United States of America
- Genre: Documentary, Reality
- Studio: Science
- Keyword: skyscraper, civil engineer, engineer
- Director:
- Cast: Julian Barratt