The Engineering Behind the Longest Tunnel in the World | Blueprint
How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder called the Gotthard Base Tunnel.
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Impossible Engineering looks at the history of pioneering modern-day mega structures. Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionized their field.
This film was first broadcast: 2016
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