World's Longest Tunnel

7.2/10 · 24 votesApr 13, 201642 min

Ranked #2 of 8 in Season 2•+0.3 vs season avg

Discussion

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, the Gotthard Base Tunnel.

Previous episodeE4 · World's Most Powerful Dam Next episodeE6 · World's Biggest Cruise Ship

Seasons10

All 1 2 3 4 5 6 7 8 9 10

Season 2 Episodes8

E1 6.8

NASA's Rocket to Mars

E2 6.8

World's Tallest Bridge

E3 7.3

Ultimate Football Stadium

E4 6.8

World's Most Powerful Dam

E5 7.2Now viewing

World's Longest Tunnel

E6 6.5

World's Biggest Cruise Ship

E7 6.9

US Navy's Super Submarine

E8 6.6

The Glass Skyscraper

Cast1

Mike Bratton

Narrator

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Episode Summary

"World's Longest Tunnel" is episode 5 of Impossible Engineering season 2. It scored 7.2/10 from 24 votes, ranking #2 of 8 episodes this season (season average 6.9). It aired on April 13, 2016.

Next: E6 · World's Biggest Cruise Ship Best of Season 2