Archeologists from the University of Wroclaw in Poland have discovered 150 graves of an unknown culture that lived in the Peruvian Atacama desert, prior to the expansion of the Tiwanaku civilization.
The Atacama Desert is a plateau that covers 1000 km of land in the countries Chile, Peru, Bolivia and Argentina.
The Tiwanaku civilization is one of the most significant civilizations in Peru, Bolivia and Chile before the Inca Empire, prosperous between AD300 and AD1000.
The archeologists made some surprising discoveries. The graves were in the sand without stone structures. Because of this they were difficult to find; this is probably the reason why they were not plundered over the centuries.
The revealed items shows that this culture already had a clear social division, they found jewelry, as well generously decorated weaving tools.
Another interesting fact is that they discovered bows and quivers with arrows. This is very fascinating because bows are a curiosity in Peru. Furthermore they found a skeleton of a llama which means that the animal has been brought earlier to the region than thought.