"Khan and Sinha noted, “A dense concentration of Harappan sites has been documented in the Jind and Hisar districts of Haryana and further west in the Ganganagar district of Rajasthan, and this can only be explained if the Yamuna once flowed through these southwesterly flowing palaeochannels. ... The palaeo-Yamuna does represent the courses of a major feeder to the Ghaggar–Hakra system (Sarasvati) as suggested by thick sand bodies.”"