Kafiristan or Kafirstan ("Land of the Infidel" in Persian) was an historic name of Nurestan (Nuristan), a province in the Hindukush region of Afghanistan. This historic region lies on, and mainly comprises, basins of the rivers Alingar, Pech (Kamah), Landai Sin, and Kunar, and the intervening mountain ranges. It is bounded by the main range of the Hindukush on the north, the Pakistani border on the east, the Kunar Valley in the south, and the Alishang River in the west.