Using laser scanning technology to peer beneath the dense canopy of the Amazon rainforest, archaeologists have discovered hundreds of ancient earthworks that were made by a complex, enigmatic society over two millennia ago, a new study finds.
This ancient civilization, called the Aquiry, arose 2,500 years ago in Brazil. Based on the large number of earthworks, called geoglyphs, the Aquiry may have had 3 million people before the society collapsed, the researchers suggested in the study.
