Underground Mega Highway
Building Giants · Season 4 · Episode 3
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.
Episode Details
Air date, runtime, timezone, and episode position.
Season
4
Episode
3
Air Date
20/May/2020
Air Time
21:00
Runtime
45 min
Overview
Episode summary.
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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