Three distinct mountainous areas
The eastern side valleys of Ljørdalen valley with the Bergåa, Gira and Tangåa watercourses divide Fulufjellet National Park into three mountainous areas. These mountainous areas consist of high mountain plateaus with steep hillsides. The mountain plateaus are largely covered by blockfields. There is also a lot of scree and areas affected by rockfalls along the steep hillsides.
Homogenous bedrock, but varied landscape
There is only one type of bedrock found in this area. The national park is located in an area of Precambrian sandstone, so-called Trysil Sandstone, which has a deep reddish color. The sandstone is very rich in quartz and therefore degrades very slowly. This results in the soil being acidic and nutrient-poor.
The landscape is varied and changes dramatically over relatively short distances. The differences in elevation vary from approximately 520 meters above sea level in the south, to Slottet mountain which towers 1047 meters above sea level. In some places, there are also erosion formations in the form of wide ravines and gorges. The most prominent of these are Styggskora which lies east of Storgnollen, and the valley that has been cut into the landscape by the Slottsbekk river to the north of Fulufjellet. The landscape in the area of Storgnollen-Steinknøsen-Furuknøsen featuring blockfields, ravines and large differences in elevation is very distinctive.
Bergåa and Gira are the largest watercourses in the national park. Small waterfalls can be seen in certain places, with Bråtafallet in Bergåa being the most prominent. The national park doesn’t have much marshland or surface water.
There are several distinct V-shaped valleys along the western edge of Fulufjellet mountain. The direction of these valleys runs in completely the opposite way to the current drainage pattern. These valleys may be huge lateral drainage channels, formed by pressurized water along the edge of a glacier, probably during glacial melting towards the end of the last Ice Age. Styggskora is one of the most distinctive valleys. Several pitfall traps are also located in this valley.