From UPSC perspective, the following things are important :
Prelims level : Various passes in news, BRO
Mains level : NA
The Border Roads Organisation (BRO) has opened the Rohtang Pass, three weeks in advance, for transporting essential supplies and relief materials to Lahaul and Spiti districts of Himachal Pradesh.
- It is a high mountain pass (elevation 3,980 m) on the eastern Pir Panjal Range of the Himalayas around 51 km from Manali.
- It connects the Kullu Valley with the Lahaul and Spiti Valleys of Himachal Pradesh, India.
- The pass lies on the watershed between the Chenab and Beas basins.
- On the southern side of this pass, the Beas River emerges from underground and flows southward and on its northern side, the Chandra River, a source stream of the river Chenab, flows westward.