Archaeologist Ed Barnhart breaks down how much we may have underestimated the ancient Amazon, from massive earthworks and geoglyphs hidden beneath the rainforest canopy to man-made black soil, raised causeways, and entire human landscapes still being uncovered.
He explains how LiDAR is changing what we know about ancient civilizations in the Americas, why the Amazon may have supported far more people than previously believed, and why future discoveries could completely change our understanding of history.
Barnhart also shares why hidden pyramid sites are being found along major rivers in the United States, including the Mississippi, and how much may still be sitting undiscovered on private land and deep in the woods.