Description: Borasu Pass (el. 5,450 m or 17,880 ft) connects Kinnaur district of Himachal to Uttrakhand. Borasu pass was an ancient trade route between Har ki Doon valley and Kinnaur valley. Borasu Pass divides Uttarakhand from Himachal Pradesh.
The pass is located only a few kilometers from the Tibet border.
The east part of the Borasu area comes out from Tons valley and the north-west part is merged with Baspa valley. Its north-west range comes down on Jhukia Glacier. The nearest village, Chitkul, is 20.3 km away from the pass on the Himachal (Kinnaur valley) side and Osla village on the Uttarakhand side of the pass.