Lake, Shilin Stone Forest, Kunming - Shilin National Park covers an area of 350 square km and is divided into seven scenic areas with names like Greater & Lesser Stone Forests, Naigu Stone Forest, Zhiyun Cave, Qifeng Cave, Lake Changhu (literally 'Long Lake'), Lake Yuehu (literally 'Moon Lake') and the waterfalls of 'Da Dieshui'. The formations are believed to be over 270 million years old.