The Hukou waterfall on the Huanghe River west of Jixian ... abruptly narrows into a trough 50 meters wide and 30 meters deep and falls down into a big stone-strewn pool. The section of the river ...

The incident occurred when the man, who was swimming in the waterfall, inadvertently ventured into the deep end and began struggling to stay afloat. His distressed friends shouted for help ...