Innerdalen is a valley in the municipality of Sunndal in Møre og Romsdal county, Norway. It is also Norway's first nature reserve. The valley and nature reserve begins at Ålvundeid by the highway 70 in the west and stretches approximately 25 kilometres (16 mi) to the east to Innerdalsporten. It lies within the Trollheimen mountain range. The valley is regularly visited by mountain climbers. Some of the mountains include Store Trolla (1,850 metres / 6,070 feet, highest in Trollheimen), Skarfjellet (1,790 metres / 5,870 feet), and Innerdalstårnet (1,452 metres / 4,764 feet). For glacier hiking, there is a glacier on top of Kongskrona called Vinnufonna.