Overview: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.
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First Air Date: Jan 04, 2018Last Air date: Jul 01, 2020Season: 4 SeasonEpisode: 29 EpisodeRuntime: 45:14 minutesQuality: HDIMDb: 3.3 / 10 by 3 usersPopularity: 9.815Language: en
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