It is actually the evacuation tunnel for the City Rail, but they decided to make it a pedestrian and bicycle tunnel since they had to build it anyway. There is now a dedicated, car free track to walk or cycle all the way from where I live to the center of Bergen (without any large hills to cross :-)
Today I just poked my camera inside the opening, but I will walk through the whole tunnel soon (maybe next week). There are supposed to be some nice photo ops along the way.
Here's a video of a someone riding an electric scooter on the track all the way to town: https://www.youtube.com/watch?v=eR1jX-dYdmU
(Double the playback speed on this one :-)
@monikozi The tunnel is 2.9 kilometers and the total distance from where I live to the center of Bergen on this bike path is 7.8 kilometers. I might have to get my bike out of retirement and fix the brakes to have a go at this :-)
Absolutely brilliant! And 3kms is a great length; you could easily do multiple return trips if you need to get more mileage. The incline looks just enough to make it feel as if you’re exercising. Fantastic idea.