The development of tribal areas in Himachal Pradesh is one of the major steps taken by the state government for its economic development. The border districts of Kinnaur, Lahaul, Spiti and the Pangi and Bharmour tehsils of Chamba districts are the major tribal areas of the state. They are located near the borders of Tibet and Indian States of Jammu and Kashmir. Other backward areas include Shillai in Sirmaur district, and deep cut-off valleys in the Kullu and upper stretches of Kangra districts. Due to poor accessibility, life in these areas had grown in isolation.