Awesome Underwater Tunnel

How the world's longest underwater tunnel was built - Alex Gendler

How Europe's Building the World's Longest Underwater Tunnel!

Building the World's Longest Undersea Railway - The Channel Tunnel Story | Spark

HOW IT'S MADE: Underwater Tunnels

How the world longest underwater tunnel was built

The Perspective

15 MOST Incredible Underwater Tunnels

Unbelievable! The sea is full of water, how is the undersea tunnel built?

Denmark’s ‘Disappearing Road’ Is Really An Awesome Underwater Highway

Brutal Deep Water Mine Entrance Leads to Incredible Geology

Overground Underground

The World's Most Incredible Undersea Tunnels

Guy swims through an underwater tunnel!

The $15BN Tunnel That CHANGED Europe

World longest and deepest underwater tunnel - The Ryfast tunnel, Stavanger Norway

Norway To India

The World's Most Incredible Undersea Tunnels

The Scary Cherry

Norway’s $47BN Coastal Highway

World's Longest Underwater Tunnel Costs $7 BILLION!

How Do They Build Underwater Tunnels?

This got 34 million views (Underwater phenomenon!) #nature #scubadiving

The Channel Tunnel: Building the World's Longest Undersea Link

The unique undersea tunnels that link the Faroe Islands | BBC Global