The 333-square-kilometre (129 sq mi) park was established on 17 December 2004 by a royal resolution.

The park covers 333 square kilometres (129 sq mi) of land along the border with Sweden.

The park lies east of the populated areas in Lierne Municipality, about 12 kilometres (7.5 mi) southeast of the village of Sandvika and about 6 kilometres (3.7 mi) northeast of the village of Mebygda.

The park is dominated by a large mountainous region rich in lynx, wolverines, bears, and wildfowl.

There are many wetland areas with large swamps and open woodlands.