Thousands of years later, when some of these Himalayan Rivers became non-perennial or started drying up, some of these people started moving towards Central Asia and Europe.
After Bharat Milap they left Chitrakoot and went to Atri Ashram located in Satana in MP.
2 to 7 of map 1) and reached on the banks of Saryu river.
After crossing the boundary of Kosal Desh, they entered Shringaverapura (Srigraur) which was kingdom of Nishadraj Guh and is famous for Kewat taking them across Ganga in his boat (20 km from Allahabad).
Therefore some people started travelling from south to north.
Such northward migration continued for several centuries and finally when these people from south India reached the banks of Himalayan Rivers, they got climatic conditions conducive to long term development of civilization on the banks of these rivers providing security of water, food and shelter for a very long time.