Earthworks

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Circles of mystery: Strange ancient earthworks in Brazil’s Amazonian rainforest

Hundreds of enigmatic earthworks lay hidden for millennia beneath what was thought to be virgin rainforest. Who built them, and why? In searching for answers, Jennifer Watling discovered how ancient human activity holds the clues for future forest-management. The discovery in recent years of mysterious circular earthworks in western Amazonia is one of the most […]

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