Fyllingsdalstunnelen in Fyllingsdalen, Norway
Opened in 2023, this tunnel is 2.9 km long (about 1.8 miles). Very useful for pedestrians, bicyclists, various exercising in a city where it rains almost all year. Now also easily binding together two parts of the city that previously was parted by a mountain and took a long time to travel around. Nice resting area in the middle as the tunnel there has a hall. Very colourful light throughout the…
We haven't written up this one. Atlas Obscura has the full story — the link below goes straight to it.
