Workers repair a cave-in area on a road in Xi'an, Shaanxi province May 27, 2012. The cause of the cave-in, measuring about 6 meters (20 ft.) in depth, 15 meters (49 ft.) in length and 10 meters (33 ft.) in width, is still under investigation. No casualty has been reported, according to local media. (Photo by Reuters/China Daily)
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