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The Himalayas are one of the young fold mountains in the world, extending from the Pamir Knot in Tajikistan to the east. It is a major mountain system of the Asian continent. In India, it extends from Jammu and Kashmir to Arunachal
Pradesh. The Himalayas is not a single mountain range, but there are many parallel ranges in the system. The southernmost is known as Siwaliks, the youngest range. Next to Siwaliks are Lesser Himalayas, Greater Himalayas (Himadri) and Trans Himalayan range from south to north. These ranges are young to old respectively. These mountain ranges are also divided into Western Himalayas (or Kashmir Himalayas), Central Himalayas (or Kumaun Himalayas) and Eastern Himalayas (or Assam Himalayas).