In this second documentary in our Ancient Technology series, David Hatcher Childress flies to Peru with British engineer Christopher Dunn. Together they journey to Cuzco in the Andes Mountains to examine evidence for the possible use of advanced rock-machining techniques. Going to ancient cities and megalithic quarries, they again examine saw marks, advanced lifting and … Continue reading Ancient Technology in Peru and Bolivia with David Hatcher Childress and Chris Dunn