Although the river does not have a physical existence today, there are numerous references to it in the ancient Indian literature of the Vedic period. A part of the river exists now as Ghaggar in Haryana. The present dried bed of the Ghaggar was thus part of a major river, known as Sarasvati. The history calls Sarasvati as the seventh river of the Sindhu Sarasvati river system. Hence it has the name 'Saptsindhu' in the region bounded by rivers Sarasvati in the east and Sindhu (or) Indus in the west. The river Sarasvati originated from the Har-ki-Dun glacier near Yamunotri in West Garhwal It was considered as a mighty river in the ancient times.