Amazon: The Lost World

In Brazil, archaeologists are investigating mysterious geometric shapes revealed in the landscape by extensive deforestation. Who built them, and when? And how many more are concealed beneath the remaining rainforest canopy?

New discoveries, including one of the biggest collections of prehistoric rock art in the world, are revealing a forgotten civilisation that once thrived in the jungles of the Amazon. But who created that civilisation, and when? Where did they come from, and how did they survive in the jungle? Archaeology and new technology are tracing the first steps of a forgotten jungle civilisation.