SMRTR TechApr 27, 2025Hacker News

The record-breaking tunnel being built from Denmark to Germany

SMRTR summary

A massive 18km underwater tunnel is being constructed between Denmark and Germany, set to be the world's longest prefabricated road and rail tunnel. The $8.1 billion Fehmarnbelt project will slash travel times, improve Scandinavia's links with Europe, and reduce carbon emissions by providing a shorter route for freight and passengers.

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