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Science Channel – Impossible Engineering: Season 7 (2019) Episode 2 World’s Toughest Tunnels

Impossible Engineering Series 7 Part 2 Worlds Toughest Tunnels
Impossible Engineering: Series 7
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 revolutionised their field. It is a tribute to their achievements.

Part 1: Dubai’s Impossible Island
The man-made islands of Dubai are modern-day engineering marvels that turn the Arabian Sea into high-priced real estate. Today, a team of expert engineers use cutting-edge technology to build a brand-new city district where there was once only water.

Part 2: World’s Toughest Tunnels
A team of engineers are overhauling London’s underground infrastructure to build a world-class sewer system. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece.

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