List of Longest Tunnels in The World

List Of Longest Tunnels In The World

The longest large tunnels in the world have been constructed for water distribution, followed by tunnels for railways. Both uses are highly sensitive to gradients.

Read more about List Of Longest Tunnels In The World:  World's Longest Tunnels (in Use), World's Longest Tunnels (under Construction), World's Longest Tunnels (advanced Planning Stage)

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