Well we have northeren light warning - Aurora Borealis so if You are lucky look up after eight,ish :-)
If You visit Bergen do take the "Norway in a nutshell" tour, it will give You the mountains, the fjords and a whole lot of amazing places and as SSTEEL mention valleys.
Trolls are everywhere You have to look at the right places Geo :-)
See the Troll hunter trailer on U tube - thats a cool movie.