The findings were published on Thursday in the journal science and described clusters of towns and smaller villages connected by complex road networks and housing society doomed by the arrival of Europeans five centuries ago because of the diseases brought by them into the new world.

The settlement now overgrown by the forest consisted of walled towns and smaller villages organized around a central plaza.

The anthropologist Mike Heckenberger from the University of Florida said in a statement: “These are not cities, but this is urbanism, built around towns,”.

“If we look at your average medieval town or your average Greek polis, most are about the scale of those we find in this part of the Amazon. Only the ones we find are much more complicated in terms of their planning,” Heckenberger added.

It took more than a decade for the researchers to map the lost communities with the help of the available satellite images.

Researchers are finding more and more that the Americas were home to many prosperous and impressive societies and large cities.

These findings come to prove that the virgin tropical forests in north-central Brazil aren’t in fact that virgin but heavily affected by past human activity.

These finding also come to prove that Americas societies weren’t that undeveloped at all.