Building Giants S4E3
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Building Giants
S04E03 — Underground Mega Highway
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Building Giants

S04E03 Underground Mega Highway

2020-05-20

A skilled group of engineers employs advanced explosives and cutting-edge drilling equipment to carve through thick granite, creating an impressive 11-mile underground tunnel, ranked among the longest in the world.

Season 4 Episodes

1
City of Ice
2020-05-06
 2
L.A. Mega Rail
2020-05-13
 3
Underground Mega Highway
2020-05-20
 4
Mega Ice Ship
2020-05-27
 5
Earthquake Proof Mega Bridge
2020-06-03
 6
High-Speed Train
2020-06-17
 7
Monster Roller Coaster
2020-06-24
 8
Cruise Ship of the Future
2020-07-01