The Lahaul valley lies to the North of the Pir Panjal and main Himalayan ranges. It is made up of the rivers Chandra and Bhaga till Tandi and Chenab from Tandi to Udaipur, downstream of which lies the famous Pangi valley. The Spiti valley has been formed by the Spiti River. It is situated between the main Himalayan and Zanskar ranges. Kaza a small town is located in the Spiti valley. The Lahaul and Spiti valleys surrounded by mountains with elevations ranging from 3000 to 6500 meters above the mean sea level. This valley is famous for high snowfall and severe winter.
The people of Lahaul valley are cheerful and of kind disposition. They are superstitious, credulous, industrious and honest. The land in Lahaul valley is quite fertile and extensively used for off season vegetables and seed potatoes. In comparison to Spiti, Lahaul valley has better irrigation facilities. The crops grown here are barley and buck wheat. The area is quite famous for Buddhist monasteries. Pin valley is the tributary of Spiti valley in the trans-Himalayan zone.