The Indus is the western most River system in the subcontinent. Jhelum, Chenab, Ravi, Beas and Satluj are its main tributaries of Indus. It originates from the Bokhar Chu (glacier) of Mt. Kailash (6714m). It drains the largest number of glaciers and mountain slopes of the Karakorum, Ladakh, Zaskarand Himalayan Ranges.