amazon civilization 7654
Aerial photograph and plan of the Fazenda Colorada site, which is made up of clear geometric shapes. Excavations suggest inhabitants lived in the three-sided square.

Hundreds of geometric monuments unearthed deep in the Amazon may have been left behind by a previously unknown society, say scientists.

Archaeologists have found more than 200 earthworks shaped as perfect circles and squares, many connected by straight roads. They have dated one site to 1283AD but say others could be from as early as 200AD.

Hundreds of geometric monuments unearthed deep in the Amazon may have been left behind by a previously unknown society, say scientists.

Archaeologists have found more than 200 earthworks shaped as perfect circles and squares, many connected by straight roads. They have dated one site to 1283AD but say others could be from as early as 200AD.

The earthen structures or ‘geoglyphs’ can now be spotted against the treeless, savanna-like landscape and scientists have compiled an archive using Google Earth.

 

A team of researchers have analysed all the findings in a paper published in the journal Antiquity.

They found that most earthworks were clustered on a 200m high plateau at the top of river valleys. This would have given inhabitants a defensive advantage with a clear view of people coming up river. Most were also placed near spring water sources.
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