"Huge ancient lost city found in the Amazon"
"It changes the way we see Amazonian cultures. Most people picture small groups, probably naked, living in huts and clearing land - this shows ancient people lived in complicated urban societies," says co-author Antoine Dorison.
The city was built around 2,500 years ago, and people lived there for up to 1,000 years, according to archaeologists.
It is difficult to accurately estimate how many people lived there at any one time, but scientists say it is certainly in the 10,000s if not 100,000s.
