Sinkhole

　　Here, the Gesuo River flows into the Gesuo River Canyon. The cave entrance stands 145 meters high and spans over 50 meters wide, with freely passable sections reaching over 300 meters. It was featured on the cover of the China-France co-published book *Cave Exploration in Yunnan, Guizhou, and Liaoning*. The cave’s karst formations, eroded by water, glisten like jade. Ancient tree vines hang upside down from the stalactites above the cave entrance, resembling curtains or gates. About 50 meters inside, there is a spacious underground hall covering several hundred square meters, complete with a viewing stand that can accommodate hundreds of people. Below lies an expanse of naturally formed karst calcified “farmland” spanning hundreds of acres, an extraordinary landscape ideal for hosting various underground musical performances. The water that falls here forms an underground river stretching 6 kilometers, with a peak flood flow of up to 1,700 cubic meters per second—one of the highest-flow subterranean rivers in the world.