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          World heritage expert goes to ice cave
          

          By Sun Ruisheng | chinadaily.com.cn | Updated:  2017-04-27 17:16
 



          



          

          

          


          
World heritage expert goes to ice cave

          


          


          An ice cave stays below freezing despite the arrival of spring in Ningwu county, North China's Shanxi province. The ice cave was formed about 3 million years ago and its temperature stays at -6 Celsius degrees throughout the year. [Photo by Wang Quan / chinadaily.com.cn]
          
          		

          
          

          

          


          

          

          


          

          

          



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