The world's longest and deepest railway tunnel is in ... ?

How Underwater Tunnels Are Built?

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

12 World's Most Incredible Undersea Tunnels

The world's longest road tunnel #shorts #lærdalstunnelen #norway #tunnel

Where is the Longest Tunnel in the World? #shorts #facts #tunnel #world #newyork

What If You Dig A Hole Through Earth and jump in? 😱 #shorts

Channeling the Prophet Muhammad on Anniversary of His Passing

🌍 地球上で最も長い歩行可能なルート：南アフリカからロシアまで！

World Record Tunnel Glide 🪂

Inside Vietnam's Secret War Tunnels

How the world’s largest underwater tunnel is being built | BBC News

Inside Norway's $47 Billion Floating Highway

Lærdal Tunnel: Inside the World’s Longest Road Tunnel in Norway

Gotthard Base Tunnel: The Worlds Longest Railway Tunnel

The length of the Gotthard Base Tunnel in the Swiss Alps, the longest tunnel in the world

Eisenhower-Johnson underground tunnel //The longest tunnel (1.693miles)//Denver co

"China Built a Tunnel Underwater — Here’s Why It’s Amazing"

What's the longest tunnel you've been in? 😱👀 #facts #fact #shorts #tunnel #interesting

The Longest Bridge Over Water In The World