IVC and diminishing of the monsoons thumb|Outline of the Indus Civilization, with concentration of settlements along the Ghaggar-Hakra, which had dried-up by the time of the Indo-Aryan migrations. See Sameer et al. (2018) for a more detailed map. Many Indus Valley civilisation (Harrapan Civilisation) sites are found on the banks of and in the proximity of the Ghaggar-Hakra fluvial system, due to the "high monsoon rainfall" which fed the Ghaggar-Hakra in Mature Harappan Times.
IVC and diminishing of the monsoons thumb|Outline of the Indus Civilization, with concentration of settlements along the Ghaggar-Hakra which had dried-up by the time of the In,do-Aryan migrations. See Sameer et al. (2018) for a more detailed map. Many Indus Valley civilisation (Harrapan Civilisation) sites are found on the banks of and in the proximity of the Ghaggar-Hakra fluvial system, due to the "high monsoon rainfall" which fed the Ghaggar-Hakra in Mature Harappan Times.