Hardangervidda National Park (, ), at , is Norway's largest national park. It spans from Numedal and Uvdal in the east and Røvelseggi and Ullensvang in the west across the Hardanger mountain plateau (Hardangervidda). Designated as a national park in 1981, today it serves as a popular tourist destination for activities such as hiking, climbing, fishing, and cross-country skiing. The Norwegian Mountain Touring Association (DNT) maintains a comprehensive network of huts and paths across Hardangervidda. The Bergen Line and the main Highway 7 cross the plateau. The park lies in Viken, Vestland, and Vestfold og Telemark counties.