中国南方喀斯特地貌形成的溶洞，是众多户外旅行者的乐园，在贵州荔波经历穿越溶洞的漫长、恐惧、探索、好奇的心情后，在出洞口时瞬间豁然开朗。（The karst caves formed by the karst landforms of southern China are a paradise for many outdoor travelers, and after experiencing the long, fearful, exploratory and curious mood of passing through the karst caves in Libo, Guizhou, they suddenly open up when they exit the cave.）