Brazil's Amazon Stonehenge reveals ancient astronomical alignment in Amapá
Researchers studying the Parque Arqueológico do Solstício, a megalithic stone circle near Calçoene, Brazil, have found that one of its 127 granite blocks loses its shadow entirely on the December solstice. Pottery found at the site dates it to between 500 and 2,000 years old, though the granite blocks themselves have not been directly dated. Archaeologists believe indigenous peoples built the site for astronomical, ceremonial, or burial purposes.