China is one of the countries in the world with largest carbonate rock occurred, and it is in south China that the most typical and diverse karst landforms developed. Centered by Guizhou Province and covering some 600,000 square kilometers the South China Karst terrain is believed the largest single karst area in the world, including eastern Yunnan, most of Guizhou, with a major extension into parts of Chongqing, Sichuan, Hunan, Hubei and Guangdong. With high altitude plateau (average 2000-2200 elevation) in the northwest and low-lying plain (average 100-120 elevation) in the southeast, the overall topography features a giant slope declining from northwest to southeast. South China Karst is the title of the serial application for the World Natural Heritage by Chinese Government. (Source: China.org.cn)
