Utladalen (sometimes also Utledalen) is Norway’s deepest valley. It can be found along the Utla River, and its 25 kilometres of length is lined with a number of mountains over 2,000 metres high, and its walls are adorned with several beautiful waterfalls. So it will come as no surprise that the hiking trail ends at Vettisfossen, one of Norway’s highest waterfalls, where water falls uninterrupted from a height of 275 metres.