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Building Giants - Season 4 Episode 3 Underground Mega Highway

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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, 2018

Last Air date: Jul 01, 2020

Season: 4 Season

Episode: 29 Episode

Runtime: 45 minutes

IMDb: 7.70/10 by 3.00 users

Popularity: 4.053

Language: English