The Nissedal potholes are in a small valley in the mountains a few kilometers south of Lake Nisser, close to Hønetjønn. This beautiful natural phenomenon was created during the last ice age but was only discovered after the Fyresåna River was dammed in the 1950s. In the dried-up riverbed, both smooth-cut rocks with rounded shapes and small and large depressions emerged, which in some places were deep oblong or cylindrical holes, so-called potholes. This area is today a popula