The remains of a building are pictured at the newly discovered ancient Maya city Chactun in Yucatan peninsula in this undated handout picture by National Institute of Anthropology and History (INAH) made available to Reuters June 18, 2013. Archaeologists have found the ancient Maya city that remained hidden for centuries in the rain forests of eastern Mexico, a discovery in a remote nature reserve they hope will yield clues about how the civilization collapsed around 1,000 years ago. REUTERS/INAH/Handout via Reuters (MEXICO – Tags: ENVIRONMENT SOCIETY TRAVEL)
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