May 10, 2026
Tunnel vision, comment chaos
First tunnel element of the Fehmarnbelt Tunnel immersed
Europe just dropped a giant tunnel chunk into the sea and the comments are losing it
TLDR: The first giant section of the Fehmarnbelt Tunnel has now been placed underwater, a big step toward creating the world’s longest immersed tunnel between Denmark and Germany. Commenters swung between amazement that it won’t leak, price-tag shock, and nerdy comparisons to other rail megaprojects.
Europe’s massive Fehmarnbelt Tunnel project just hit a huge milestone: the first tunnel section has been lowered into the seabed between Denmark and Germany. When it’s finished, this 18-kilometre undersea link will be the longest immersed tunnel on Earth, carrying both cars and trains and helping connect Scandinavia to mainland Europe much faster. But while the engineers were busy doing precision megaproject magic, the internet was busy having a very different reaction: a mix of awe, sticker shock, and classic comment-section math wars.
The biggest mood? How does this thing not leak? One commenter basically voiced everyone’s inner panic, marveling that people can build underwater tunnels at all without the whole plan turning into a very expensive aquarium. That sense of disbelief gave the story its main drama: half the crowd was cheering human ingenuity, while the other half immediately pulled out calculators. One sharp-eyed commenter compared the project’s eye-watering 52.6 billion Danish kroner price tag to California high-speed rail and declared the Merced-to-Bakersfield section a “bargain on a distance basis,” kicking off the timeless megaproject debate: is this genius infrastructure or just unbelievably pricey concrete?
And then there was the calm, wholesome corner of the internet, where one user simply dropped a video explainer and reminded everyone that sometimes the most powerful comment is, “wow, that’s actually pretty cool.” In other words: one tunnel element went down, and the comments immediately split into fear, finance, and fandom.
Key Points
- •The first tunnel element of the Fehmarnbelt Tunnel has been successfully immersed on the Danish side.
- •At 18 kilometres, the Fehmarnbelt Tunnel is intended to become the longest immersed tunnel in the world.
- •The project is designed to connect continental Europe and Scandinavia with both a highway and a double-track rail link.
- •The RAT Joint Venture, made up of Ramboll, Arup and TEC, has provided technical consulting to client Sund & Bælt since 2008.
- •The project is divided into three major civil engineering contracts: TPR for portals and ramps, TDR for dredging and reclamation, and TUX for the immersed tunnel itself.