Photo taken on July 20, 2013 shows the scenery of Danxia landform at Pingshan Lake scenic area in Zhangye, Northwest China's Gansu Province. Danxia, which means "rosy cloud", is a special landform ...
Thermokarst is the process whereby the thawing of ice-rich permafrost ground causes land subsidence, resulting in development of distinctive landforms. Accelerated thermokarst due to climate change ...
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