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Take tour in Cave of Valporquero in Leon, Spain 

        

        
 Source: Xinhua| 2018-04-28 14:31:24|Editor:  pengying 

        

              
        

        

        

        

        

        
    

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        SPAIN-LEON-VALPORQUERO CAVE
        

        People take a tour in the Cave of Valporquero in Leon, Spain, on April 27, 2018. Valporquero is a cave formed by an underground river. (Xinhua/Guo Qiuda) 
        

        

        

        


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