FILE - In this April 1, 2010 file photo, llamas graze during the reopening of the citadel of Machu Picchu after flooding forced its closure in Cuzco, Peru. The Inca citadel of Machu Picchu is Peru's ... more 
FILE - In this April 1, 2010 file photo, llamas graze during the reopening of the citadel of Machu Picchu after flooding forced its closure in Cuzco, Peru. The Inca citadel of Machu Picchu is Peru's most famous tourist attraction and celebrates on Thursday July 7, 2011 the 100 year anniversary since its discovery. (AP Photo/Karel Navarro, File) less 
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Associated Press | Photo By Karel Navarro, File
Tue, Jul 5, 2011 10:53 AM EDT