The Kangra valley is a longitudinal trough which is at the foot of the Dhauladhar range. Dhauladhar (which means the 'White Peak') has a mean elevation of nearly 4,550 metres. It has a rapid rise of 3,600 m above the Kangra valley. The largest of the lesser Himalayan ranges, the Pir Panjal, branches off from the Greater Himalayan range near the bank of the Sutlej. A number of glaciers exist and several passes lie across the Pir Panjal. The Rohtang Pass (3,978 m) is one of these.