Archeological discoveries in the recent years from middle Asia rock conventional wisdom about civilization as originated on the banks of Tigris River and then as having migrated to other centers such as Indus valley and others. A vast area spread from the eastern border of Iran to its borders on the west with Pakistan and from the Arabian Peninsula to the Russian steppes contains, according to Andrew Lawler, a freelance journalist, invaluable archeological evidence suggesting a cultural awakening in many cities in the mid to late 3rd millennium BC. What has been unearthed till 2007 in this area is already suggesting cultural exchanges and cooperation among seemingly independent city-states rivaling those of the Greek civilization. Perhaps they mutually shared knowledge of an ancient calendar system instead of one being a derivative of another.
Undersea discoveries of a pre-harapan civilization