Archaeologists Find 5,500-year-old Plaza in Peru

(Reuters) - A ceremonial 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 circular plaza, which was hidden beneath another piece of architecture at the ruins known as Sechin Bajo, in Casma, 229 miles north of Lima, the capital.  Friezes depicting a warrior with a knife and trophies were found near the plaza.

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