Photos of Heilaoguo Ice Cave

The Qingyang Heilaoguo Ice Cave is different from the ice waterfalls we see in the Qinling Mountains on weekdays. The soil layer is cut into meandering grooves, and the grooves gradually deepen, penetrate the surface soil layer, communicate with the underground river, and form a new channel. With the change of climate, the surface river gradually thins and turns into a stream, and the stream becomes dry and turns into a seasonal spring, and it disappears from time to time. The groundwater still seeps out from the soil layer. It condenses into ice, and day after day, the wonder of this underground ice waterfall is formed.