The Setesdal River is a river located in southern Norway, flowing through the picturesque Setesdal Valley. It originates from the Byglandsfjord and travels approximately 100 kilometers before merging with the Otra River. The river is known for its clear waters and scenic surroundings, making it a popular destination for outdoor activities such as fishing and hiking. The Setesdal River is also significant for its historical importance, as it has been a vital waterway for transportation and trade in the region. The river supports a diverse ecosystem, home to various fish species, including salmon and trout, attracting anglers from around the world.