Archaeologists have uncovered hundreds of vast earthworks in the Amazon rainforest that they say are evidence of a “lost civilisation” that flourished nearly 2,000 years ago, said New Scientist.
Researchers believe the geometrically patterned structures, known as geoglyphs, were built by an advanced pre-colonial society, known as the Aquiry, between 600BC and AD850 – without metal tools or animals. But they are almost impossible to detect under the dense tree canopy of the deep rainforest.
The archaeologists – employing cutting-edge airborne laser scanning technology – found hundreds of previously unknown earthworks. They combined the light detection and ranging (LiDAR) data with previous findings to estimate that there might be up to 30,000 structures across the Aquiry territory. The results “strongly suggest” that, at its peak, the civilisation may have numbered 1.25 to 3 million people, the experts wrote in a study published in Nature.
Archaeo-anthropologist Martti Pärssinen, from the University of Helsinki, theorised that the earthworks had been built by a complex, pre-Columbian civilisation. In 2021 he “officially introduced the name Aquiry”, said LiveScience, after the Indigenous name for the Acre River, which flows from Peru and Bolivia into Brazil.
While Romans were “laying roads and building temples”, the Aquiry were “carving vast circles, squares and monumental enclosures” on the other side of the world, said The Times.
The Aquiry cleared forests for the huge earthworks and extensive roads “without destroying the Amazon”, said Pärssinen. “They lived in harmony in that way with the forest,” he added. “They made clearings, but not too big to change the ecological systems. Despite their huge numbers, they never converted the rainforest into savannah.”
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