Leye Fengshan UNESCO Global Geopark

UNESCO Global Geopark, inscribed 2015, in China. Discover the Dashiwei tiankeng cluster, featuring 35 spectacular collapsed dolines along the Bailang underground river, including one over 600 metres wide and 613 metres deep. Explore the Sanmenhai karst windows, a unique group of surface openings in the Poxin resurgence area connected to an underground cave river system.