The geographical feature that serves as the backbone of the Indian subcontinent is the Himalayas. This extensive mountain range not only delineates the northern border of India but also influences the climate and ecology of the region. The Himalayas are essential for the rivers that originate from them, including the Ganges, Brahmaputra, and Indus, which support millions of people. They are also significant culturally and spiritually, with many important pilgrimage sites located in the region. The Himalayas' majestic presence has made them a symbol of natural beauty and sanctuary.