Carthage's Lost Warriors

From PBS - At the headwaters of the Amazon, archaeologist are on the trail of a tribe which was lost centuries ago. The Chachapoya left hidden necropolises and one of the largest fortress in the Americas called "Kuelap." The Inca feared their power in combat and praised the beauty of their women. This warrior people of the Andes is surrounded by secrets, and its origin remains the largest secret of all.