Hattfjelldal (Norwegian) or Aarborte (Southern Sami) is a municipality in Nordland county, Norway. It is part of the Helgeland traditional region. The administrative centre of the municipality is the village of Hattfjelldal. Other villages include Grubben, Svenskvollen, and Varntresk. Hattfjelldal Airfield is located in the village of Hattfjelldal. The 2,684-square-kilometre (1,036 sq mi) municipality is the 20th largest by area out of the 357 municipalities in Norway. Hattfjelldal is the 315th most populous municipality in Norway with a population of 1,284. The municipality's population density is 0.5 inhabitants per square kilometre (1.3/sq mi) and its population has decreased by 14.4% over the previous 10-year period. Hattfjelldal is one of the last strongholds for the severely endangered Southern Sami language. It was also one of the municipalities in Norway involved in the Terra Securities scandal. Source: Wikipedia (en)