How the World’s Deepest Undersea Mega Tunnel Is Being Built

Beneath Norway’s breathtaking fjords, one of the most ambitious infrastructure projects in Europe is taking shape. The Rogfast tunnel will soon become the longest and deepest underwater road tunnel in the world — stretching 26.7 kilometers and plunging nearly 400 meters below sea level. A $2+ billion megaproject and a record-breaking engineering. Extreme technical challenges and major environmental and financial controversies. In this episode, we take you deep beneath the Norwegian fjords to explore how this unprecedented structure is being built and whether it’s truly worth it. Fasten your seatbelt. We’re going underground. If you enjoy megaprojects, extreme engineering, and record-breaking infrastructure, don’t forget to subscribe to Looking 4 and turn on notifications 🔔 See you in the next episode. You can support the development of the channel by becoming an exclusive member here 👇    / @looking4onyoutube   For commercial demands, please contact me on 👉 channel.looking.4@gmail.com #construction #norway #tunnel Script : Guillaume Fournier 00:00 – Introduction 01:08 – Norway’s Geographic Challenge 02:22 – The E39 Coastal Highway Megaproject 03:11 – Rogfast: The Flagship Tunnel 04:58 – Why This Tunnel Is So Extreme 08:30 – Water Leaks & Construction Challenges 10:50 – Who Will Pay? Economic & Environmental 2026 Looking 4 (En) | All rights reserved.