Caspian Sea, Kashmir and Kashgar is a triangle of three regions. On the Indian side, it is believed that the names of these regions are derived from Rishi Kashyapa.
Indian legends, the various Purana which use symbolism & personification to explain natural phenomena & concepts, describe how all beings descended from Rishi Kashyapa, considered to be the progenitor of the world
The region of Kashmir (Kashyapa Mira, where Mira means a lake, sea), the Caspian Sea and even Kashgar are all attributed as a reminder of this Kashyapa.