Nope, that's what it looks like :) I haven't been there, but check out this photograph of the Vallavik tunnel in West Norway for another example of render-like architecture: https://en.wikipedia.org/wiki/Vallavik_Tunnel
-The Lærdal tunnel is a masterstroke of tunnel engineering; at 24.5km/15miles long, a major issue would be that it is simply mind-numbingly boring to drive through it, with the likely consequence that drivers' minds drift and accidents result.
To counter this, the tunnel is broken up somewhat by three caves blasted out at regular intervals; these are lit by coloured lights and go a ways towards breaking the monotony.
Still mind-numbingly boring, though.
To give an idea of how prevalent tunnels are in western Norway - going from where I live in Hareid down to where my mother's family comes from, Voss - a 400km/250mi drive - just over 100km/62mi are in tunnels, including the Lærdal tunnel and the Eiksund tunnel, which was until recently the deepest subsea road tunnel in the world at 290m/950ft deep. (Steepest grade: 9.6%. Engine braking is your friend.)
I noticed something funny when going through it in a Tesla for the first time. The three parts have slightly different inclines, and the transition between them is sharp.
Don't remember exactly, but I think the first part is uphill, then flat, then downhill. You can see it very clearly on the performance monitor. There's also the built-in curves, of course, but I guess that's pretty standard road tunnel engineering.
