According to ancient Chinese myth, the source of the Huang He (Yellow River) extends all the way to the Milky Way, which itself was thought to be a celestial river connecting Earth and heaven. The Yellow River Delta is an unusually dynamic place. Indeed, the tail of the Yellow River thrashes naturally about over time, its lower reaches shifting back and forth over huge distances. (To see the changes in the Qingshuigou lobe in more detail, read our World of Change: Yellow River Delta story). Satellite-based surveys of the Yellow River delta have measured sinking at hundreds of millimeters per year around certain pumps.