The Nuristani languages are one of the three groups within the Indo-Iranian language family, alongside the much larger  Indo-Aryan and Iranian groups. They have approximately 130,000 speakers primarily in eastern Afghanistan and a few adjacent valleys in Khyber Pakhtunkhwa's Chitral District, Pakistan. The region inhabited by the Nuristanis is located in the southern Hindukush mountains, and is drained by Alingar River in the west, Pech River in the center, and Landai Sin and Kunar River in the east.