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The World’s Longest Immersed Tunnel Is Almost Built—a $7 Billion Project Without a Tunnel Boring Machine
When we think of groundbreaking advancements, flashy gadgets and futuristic tech often steal the spotlight. But some of the ...
Strangest tunnels in the world from 'entrance to hell' to mysterious passage made by sloths
From a passageway made by giant sloths to a slinky tunnel bridge and an 'entrance to hell' - there are some extraordinary ...