About Hallingdal: Hallingdal is in the northern part of Buskerud county. The valley is 150 km long, and goes from Gulsvik (by the lake "Krøderen") and upwards to the county boarders of Hordaland and Sogn og Fjordane. The Hallingdalen area covers 5840 square kilometers, and consist of the municipalities Flå, Nes, Gol, Hemsedal, Ål and Hol.