Siwalik Hills

The Sivalik Hills also known as the Sivalik mountains (also spelled Shiwalik, Shiwalik, or Siwalik) and sometimes called Churia Hills or Outer Himalaya are the southernmost and geologically youngest east-west mountain chain of the Himalayan System. The Sivalik Hills crest at 900 to 1,200 meters and have many sub-ranges. They extend 1,600 km from the Teesta River in Sikkim, westward through Nepal and Uttarakhand, continuing into Kashmir and Northern Pakistan. The Mohan Pass is the principal pass accessing the Sivalik Hills from Saharanpur in Uttar Pradesh to Dehra and the hill station of Mussoorie in Uttarakhand. Eastward they are cut through at wide intervals by large rivers flowing south from the Himalaya. Smaller rivers without sources in the high Himalaya are more likely to detour around sub-ranges.
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