Building Giants - Season 4 - Eps 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.
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