The history of human settlement in Rajasthan reaches back around 100,000 years. During 5000-2000 BCE, many regions of Rajasthan were part of the Indus Valley Civilization, with Kalibangan as a significant site. The Sarasvati River flowed through the Aravalli mountain range around 2000 BCE. In the Vedic Period, the region was known as Brahmavarta, lying between the divine rivers Saraswati and Drishadwati. The Matsya Kingdom, a vital Vedic realm, participated in the Kurukshetra War alongside the Pandavas