Mysterious symbols discovered in Brazil, scientists say
Discover the surprising connection between prehistoric humans and dinosaurs in Brazil's Serrote do Letreiro.
![](https://whatco.me/media/cache/resolve/entry_thumb/e7/b3/e7b34f5f33a78e5a4d722bb854e9745a3f22ad77226df1828f0aca291bd7a115.jpg)
Discover the surprising connection between prehistoric humans and dinosaurs in Brazil's Serrote do Letreiro.