Overview:How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder, the Gotthard Base Tunnel.
Watch Trailer
First Air Date: Apr 13, 2015Last Air date: Sep 01, 2021Season: 10 SeasonEpisode: 82 EpisodeRuntime: 42:14 minutesQuality: HDIMDb: 4.2 / 10 by 15 usersPopularity: 6.1237Language: en
Comment