'Desertification' is one of the most serious problems facing the world today. Several of world's deserts are characterised as high latitude types. In India, Ladakh, Lahaul-Spiti and part of Kinnaur are cold deserts (Western Himalayas). Because of the extreme climate and poor economic conditions of the people, Spiti is one of the worst scourged areas on earth. Nature places it behind the rain shadow of the great Himalayan divide. It was a part of the Tethys sea ...
