"‘[The desertion of the Drishadvati and the Sutlej] is typical of the instability of the river courses in the Indus plains—but in the case of the Saraswati, the effect was not localized but devastating on a major scale. Cities, towns, and villages were abandoned, their inhabitants drifting to other regions of the Indus realms and eastward towards the Ganges, pushing back the centuries-old eastern boundaries of Indus culture and venturing into uncharted territory.’"