 Innerdalen, in the western part, was Norway's first nature reserve, and is often described as the most beautiful valley in Norway.The "Triangle" () is a route between the three mountain lodges ("Gjevilvasshytta", "Jøldalshytta" and "Trollheimshytta") each a fairly long hike of about 7 to 9 hours.It is possible to choose a route covering the three peaks of Trollhetta, a spectacular (but long) hike comparable to the Besseggen route in Jotunheimen.