The highlight of our trip to Norway was definitely the walk through the Utladalen. The highest, most beautiful and powerful waterfalls are located in this valley.
From Øvre Ardal, the Utladalen is easily accessible via road Fv301. At the end of the road there is a parking lot and the first big waterfall is already visible: The Hjellefossen. With great power the water of the river Hjelledola thunders down over 365 meters.
The Avdalsfossen is a little bit futher into the valley and is only accessible via a path that leads to the Avdalsfossen. On your left hand the fall shows up after 15 minutes. The water of the Slufsedøla en de Gravdøla drops down in a single tier over 175 meter and is fed by melting water of the mountain range Hurrungane.
Afterwards you can walk for hours to the Stolsmaradalsossen, Vettisfossen and further to the Midtmardalsfossen. There are two trails to go further into the Utladalen on both sides of the river. We followed the lower trail following the river and we experienced no problems besides that the road was gone over 200 meters. But that was years ago.