The River Coffins of Wu Gorge

Deep in Wu Gorge lies a "reverse-flow creek" where water runs uphill against the current. Along its cliffs, no hanging coffins are placed; instead, coffins are sunk to the riverbed—a burial custom called "sinking burial" practiced by the "Shuiyi," a branch of the Ba people. They rejected the belief that "the higher the coffin, the greater the filial piety," and instead believed that the deeper the coffin, the closer to the water god's realm, allowing them to deliver messages to the ghost capital of Pingdu (modern Fengdu) in the underworld. Over millennia, the coffins at the riverbed formed a "living feng shui" array. Whenever mist rises from Kuimen Gate, the river coffins shift with the undercurrents, rearranging themselves into hexagrams. — Description from novelcodex.org