[KongchangAI]
Unverified50% confidenceFactExact time

The Fehmarnbelt Tunnel is about 18 kilometers long and designed as a bidirectional railway and road passage; once completed it will become one of the longest immersed tunnels in the world.

1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen

Sources

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