The Himalayas is a vast mountain range in South Asia that separates the Indo-Gangetic plain from the Tibetan plateau, containing nine of the ten highest peaks on Earth, including Mount Everest. Formed by the continental collision between the Indo-Australian and Eurasian plates, it consists of three main divisions: the Great Himalayas (Himadri), Lesser Himalayas (Himachal), and the Shiwalik range. Additionally, the Himalayas are regionally divided into Western, Kumaon, Nepal, Assam, and Eastern Himalayas, with significant geographical and cultural features in each area.