The oldest hominin fossil remains in the Indian subcontinent are those of Narmada Human, from the Narmada Valley, 5th longest river and overall longest west-flowing in central India Maharashtra state,

and are dated to approximately half a million years ago. Reviews of archaeological evidence have suggested that the occupation of the Indian subcontinent by hominins was sporadic until approximately 700,000 years ago and was geographically widespread by approximately 250,000 years ago.
 
Hominin expansion from Africa is estimated to have reached the Indian subcontinent approximately two million years ago, and possibly as early as 2.2 million years ago. This dating is based on the known presence of Homo erectus in Indonesia 1.8 million years ago and in East Asia 1.36 million years ago, as well as the discovery of stone tools at Riwat now in Pakistan