The elevation of the Dhauladhars ranges widely from 3,500 m to nearly 6,000 m. From the banks of the Beas river in Kulu, the range curves towards the town of Mandi, Himachal Pradesh, India. Then, running north, it passes through Barabhangal, joins the Pir Panjal range and moves into Chamba, Himachal Pradesh.The Dhauladhars have a peculiar topography. Although mostly composed of granite, the flanks of the range exhibit frequent formations of slate (often used for the roofs of houses in the region), limestone and sandstone. Ascending from any side is a difficult, given the near vertical incline. This calls for highly technical trekking and mountaineering. There is very little habitation on the range given the harsh conditions. But meadows abound near the crest providing rich pastures for grazing where large numbers of Gaddi shepherds take their flocks. The top of the crest is buried under vast expanses of thick snow.There are glacial lakes in the Dhauladhars. Prominent among them is the Lam Dal which is the biggest with a circumference of about 2.5 km. It is a very sacred lake and considered to be the abode of Lord Shiva. Each year pilgrims take a holy dip in August and September just when the Manimahesh yatra begins. There are other very sacred lakes like the Nag Dal/Nag Chattri Dal. This lake owes its history to the Bhagsunag Temple and is considered sacred. It is dedicated to the Nag Devta or the Lord King Cobra. The other beautiful lakes are the Chanderkup Dal above the Lam Dal, Kareri Dal below the Minkaini Pass, Dansar Lake across the Sari Pass and the very sacred Kali Kund just 150 m below the Lam Dal at an elevation of 3900 m and approachable from Minkiani Pass (4250 metres). One of the major passes across this range is the Indrahar Pass. At an altitude of 4,342 metres (14,245 ft) above mean sea level, near the tourist town of Dharamshala in Himachal Pradesh, Indrahar Pass forms the border between Kangra and Chamba districts. It is part of a popular trekking route from Dharamshala. It attracts substantial tourist traffic during the trekking season between April and October.