The archaeological team lead by Christelle Lahaye and Eric Boüeda have been excavating at Pedro Furada National Park (Brazil) where they have found 113 stone tools since 2008. Lahaye claims that the humans who may altered the rocks were there about 22000 years ago, that means, 11000 years before the famous Clovis hunters dispersed across North America 13000 years ago.
Toca da Tira Peia site, Piauí (Brazil)
For decades, archaeologists thought that the Clovis people were the first to enter the Americas. Could humans have been in Brazil 22,000 years ago?
More information at: http://www.sciencedirect.com/science/article/pii/S0305440313000733