Starting from McLeodganj (Dharamsala) at about 6000ft in the Kangra valley and passing over the mighty snowbound Dhauladhar, the trail ends at Lamu in the Ravi valley. The trail is the traditional migratory and grazing route of the “Gaddis”, the colourful, semi-nomadic Hindu shepherds who belong to the Kangra and Chamba districts. Each spring, they bring their flocks from the foothills of the Kangra, over the Dhauladhar to the Ravi valley. From there they go higher across the Pir Panjal to the main Himalaya, and on to the rich grazing grounds of the Lingti valley in Spiti.