Sinkhole 天坑

People look at a large sinkhole on a street after a water pipe broke underneath it in Xi'an, Shaanxi province, China, Oct. 27, 2013.  October 28, 2013  http://www.voanews.com/media/photogallery/1778627.html

十大天坑_百度百科
天坑(sinkhole)
http://baike.baidu.com/view/3738236.htm

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