Clearly there were master stone builders before the Inca arrived in Cusco Peru 1000 years ago.
This is exclusive quadcopter footage of flying over the ancient Bolivian sites of Tiwanaku and Puma Punku.
Re-Dating Puma Punku and Tiwanaku With Geologist Dr. Robert Schoch of Boston University.
Ancient Photos of Machu Picchu and Tiwanaku in Bolivia.
Machining Technology Prior To The Pharaohs Of Egypt?