In Manaus, a sprawling city of more than 2 million, the depth of the Rio Negro, a major branch of the Amazon River, reached ...
This ancient urban system, located in the Upper Amazon near the eastern slopes of ... described the site as "a lost valley of cities." At least 15 settlements were connected by a sophisticated ...
By Fernanda Wenzel In 2021,an army of dredges equipped to churn up the riverbed in search of gold invaded the largest ...