Rohtang Pass is a high mountain pass on the eastern end of the Pir Panjal Range of the Himalayas around 51 km (32 mi) from Manali in the Indian state of Himachal Pradesh. It connects the Kullu Valley with the Lahaul and Spiti Valleys of Himachal Pradesh, India.

The Pir Panjal Range is a range of mountains in the Lower Himalayan region located in the Western Himalayas of northern Indian subcontinent. It runs southeast to northwest between the Beas and Neelam/Kishanganga rivers, in the Indian state of Himachal Pradesh and Indian-administered union territory of Jammu and Kashmir, with its northwestern end extending into territory administered by Pakistan. The Himalayas show a gradual elevation towards the Dhauladhar and Pir Panjal ranges. Pir Panjal is the largest and westernmost range of the Lesser Himalayas. Near the bank of the Sutlej River, it dissociates itself from the main Himalayan range and forms a divide between the Beas and Ravi rivers on one side and the Chenab on the other. Further west, the Pir Panjal range forms the southwestern boundary of the Kashmir Valley, separating it from the hills of Jammu region, forming a divide between the Jhelum and Chenab rivers.