The Rjukanfossen, or the Rjukan Falls (the name means "The Smoking Falls"). Not to be confused with Telemark's Rjukanfoss which has been diverted into pipes - this giant from Tovdal remains unspoiled. The waterfall has a free fall of 45 metres, and is a beautiful sight in the woods of Tovdal. The trail is about 3 kilometres long, and the round trip will take about 2-2,5 hours. This trip is suitable for children and adults, and is regarded easy.

Take road no 41 to Dølemo, follow the signpost to Tovdal. Continue until the end of the road, to Dale. Park on the side of the road by the roundabout. Start at the information board, and cross the bridges. Follow the red marks alongside the river up to Årdalen Nature Reserve. Remember to close any gates you pass. The marks disappear at the top of the plateau, when you have a view of the waterfall. This is where you find the post box with the puncher. Rjukan waterfall with its 45 metres is the tallest waterfall in the region of Aust-Agder.

Part of the peaks of Åmli-project.