Tourists visit the Crescent Moon Lake in Dunhuang on the China end of the Silk Road, part of the Magao "1000 Buddha Caves" World Heritage site, in this undated handout photo taken by Peter Ward. To ... more 
Tourists visit the Crescent Moon Lake in Dunhuang on the China end of the Silk Road, part of the Magao "1000 Buddha Caves" World Heritage site, in this undated handout photo taken by Peter Ward. To match story TRAVEL-SILKROAD/ REUTERS/Peter Ward/Handout via Reuters (CHINA - Tags: TRAVEL ENVIRONMENT SOCIETY) ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. NO SALES. NO ARCHIVES less 
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Reuters | Photo By PETER WARD / Reuters
Thu, Dec 26, 2013 7:03 PM EST