Posts Tagged by geoglyphs

Can we distinguish human v. natural excavations?

Large geometric shapes are being discovered beneath the Amazon forest. Have the discoverers evaluated their origins correctly? If so, why? Is there any way to distinguish between artifacts caused by human and extraterrestrial agents? Once Hidden by Forest, Carvings in Land Attest to Amazon’s Lost World By SIMON ROMERO January 14, 2012 RIO BRANCO, Brazil […] more