17 China, 1974 Photograph by Luis Marden Jagged tower karst formations rise in the distance as the Li River flows past a quiet landscape near Guilin, China.

• 在中国桂林，流淌着的漓江与耸立在远处的错落有致的塔状喀斯特地貌形成了这片静谧的景色。这些喀斯特山峰是古代海床的遗迹，后来升起并被风化腐蚀。