1. Himadri – i. Average height 6000 m
ii. The major rivers such as Ganga, Yamuna, etc.
iii. Comprises the peaks like Kanjanjunga, Nandadevi, etc.
2. Himachal – i. Average height 3000 m
ii. Comprises major hill stations like
iii. – Shimla, Darjeeling, etc.
3. Siwaliks – i. Average height 1220 m
ii. The continuity breaks at many places as the rivers cut across them
iii. Broad and flat valleys called Dunes
