Cave Tourism Landscapes
These are caves other than the soluble cave types. Examples include underground caves formed by erosion of sandstone and fragmented rocks by water. Caves can also form by differential weathering in various rock types, and stacked caves can form by rock collapses. Old mines and tunnels constructed by humans are other types of caves. For example, the underground war passage from the Song and Liao Dynasties at the border between Xiong County and Yongqing, Heibei Province, and the underground passages used during the anti-Japanese war at Ranzhang, Qingyuan, Heibei Province, are man-made caves and tunnels with high tourism value.