Central Sápmi consists of the western part of Finland's Sami Domicile Area, the parts of Norway north of the Saltfjellet mountains and areas on the Swedish side corresponding to this. Central Sápmi is the region where Sami culture is strongest, and home to North Sami—the most widely used Sami language. In the southernmost part of this subregion, however, Sami culture is rather weak—this is where the moribound Bithun Sami language is used. The areas around the Tysfjord fjord in Norway and the river Lule in Sweden are home to the Julev Sami language, one of the more widely used Sami languages. These correspond to the regions marked 3 through 5 on the map below.