Archaeologists and other scientists have been scratching their heads trying to figure out how remarkable ancient megaliths were constructed. These marvelous structures consist of gigantic stones that are so heavy that our modern machinery can hardly move and put them in place. This video takes us to the mysterious ruins in search of ancient technology and the secrets of megalith building.
Examines the amazing stone cutting at Puma Punku, a site neighboring the ancient ruins of Tiwanaku near Lake Titicaca in Bolivia. He looks at whether the so-called “Inca walls”—found in Cuzco and at other sites such as Sacsayhuaman, Ollantaytambo and Machu Picchu—were really made by the Incas. The evidence seems to support the idea that they were actually constructed by a far older advanced civilization.