The Rysefossen is a quite anonymous waterfall on the opposite side of the Byglandsfjord near Bygland. An unnamed river falls down over 145 meters before it end in the Byglandsfjorden.
From road 9, one kilometer south of Bygland/Aust Agder the Rysefossen must be visible. More impressive is the Reiårsfossen, 17 kilometers north of Bygland, along road 9. The Reiårsfossen thunders down from 180 meters with a much greater volume and force.