Mega Mountain Tunnel

11th September 2019 45 mins Season 2 Episode 6

As engineers race to build a brand-new train tunnel beneath the Alps, they use cutting-edge tech and the latest construction methods to build the world's longest underground railroad in some of the most dangerous conditions on earth.

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Season 2 · Episode 7

World's Toughest Plane

The Antonov 124 is one of the biggest airplanes in the world, and as its cutting-edge engineering and immense size help it carry impossibly heavy cargo, the plane's crew races the clock to make critical international deliveries on schedule.

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