Gaustatoppen is the highest mountain in the county Telemark in Norway. The view from the summit is impressive, as one can see an area of approximately 60,000 km², one sixth of Norway's mainland. There is an elevator system inside the mountain, built for military purposes, which is now a tourist attraction. This ascends from the base of the mountain almost to the summit. The mountain is popular for downhill skiing in winter, and competitions have been held on its slopes.