Lost civilization plaza. . . .found Archaeologists find 5,500 year old plaza in Peru

A circular plaza built 5,500 years ago has been discovered in Peru, and archaeologists involved in the dig said on Monday carbon dating shows it is one of the oldest structures ever found in the Americas.

A team of Peruvian and German archaeologists uncovered the plaza, which was hidden beneath another piece of architecture at the ruins known as Sechin Bajo, in Casma, 229 miles (370 km) north of Lima, the capital.

"It's an impressive find, the scientific and archaeology communities are very happy," said Cesar Perez, the scientist at Peru's National Institute of Culture who supervised the project. "This could redesign the history of the country."