Mention the important features of the three main Himalayan ranges.

 The important features of the three main Himalayan regions are:

1. Greater Himalayas: These mountains are also called the Himadri. These are highest of all mountains. They run from Indus to Brahmaputra. The highest peak is Mt. Everest (8848m). Others are Kanchenjunga, Dhaulagiri, and Nanda Devi etc.
2. The Lesser Himalayas: These are also called Middle Himalayas or Himachal Himalayas. All the hill stations are situated on this range.
3. Shiwalik Ranges: These are the outer Himalayas. The average height of these ranges is about 1200metres.