Tiwanaku is an important Pre-Columbian archaeological site in Bolivia. Tiwanaku was the ritual and administrative capital of a major state, one of the most important precursors to the Inca Empire, flourishing for approximately five hundred years between 500 AD and 1000 AD.
Amazing walls at the pre-Inca ruins of Tiahuanaco. Tiwanaku, is an important Pre-Columbian archaeological site in western Bolivia, South America. Tiwanaku is recognized by Andean scholars as one of the most important precursors to the Inca Empire, ... Wikipedia
Puma Punku in Tiahuanaco - I do not think ''aliens'' were responsible for building this site, but I think ancient man was far more advanced than we as yet understand. The technology needed here was way beyond any later civilisations.
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Puma Punku. Stones are made up of granite and diorite. Impossible to cut with the tools used in the period. Yet they have cuts straight as a perfect line. Deep and exact from one end to the other. Each weigh over 800 tons. The nearest quarry is more then 10 miles away.