In May 2006, archeologists announced they had found a pre-colonial astronomical observatory possibly 500 to 2,000 years old near Calçoene, which is in the Amazon River basin near French Guiana.
They had found a pre-colonial astronomical observatory possibly 500 to 2,000 years old near Calçoene. This was what archeologists announced in May 2006. Calçoene is in the Amazon River basin near French Guiana.