May 27, 4:34 AM EDT
Media & Culture
Dozens Of 550-Year-Old Tombstones Discovered At Tenochtitlan Ruins In Mexico City
on 03/31/12 AT 4:55 AM
About 23 tombstones dating back to 15th century have been excavated at the ancient site of Tenochtitlan in the central part of Mexico City, the UNESCO's World Heritage Centre said in a statement Friday.