Amazonian Geoglyphs Align with Sun’s Path

Researchers at the Federal University of Alto Solimões in Brazil used remote sensing and archaeoastronomy to analyze the orientation of 326 squared and rectangular geoglyphs, ancient earthworks, in the Amazon rainforest. The team found the structures are not randomly oriented.

Instead, the geoglyphs consistently align with the sun’s annual cycle, suggesting builders deliberately positioned them in relation to solar events. These earthworks, constructed between 500 BC and 1000 AD, likely served a ceremonial purpose.

The research represents the first systematic archaeoastronomical study of these Amazonian geoglyphs. Further investigation could reveal more about the beliefs and practices of the cultures that created them and how deforestation impacts preservation.