Building Giants - Season 2 - Eps 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.
About Building Giants

Title: Building Giants
First Air Date: 2018-01-04
Last Air Date: 2020-07-01
Status: Returning Series
Rating: 7.7/10 (from 3 votes)
Language: EN
Seasons: 4
Total Episodes: 29
Network: Science
Genres: Documentary, Reality
Production Companies: Windfall Films
Synopsis
This documentary series showcases how key technological innovations enable giant superstructures to be built. Footage filmed during construction along with CGI reveal the building process with astonishing detail.
Cast

Julian Barratt
Narrator