Petroglyphs

                                                                Petroglyphs (Picuí-PB)

It is very common in the region where I live, in particular to find out petroglyphs, to be more specific mean engraving in low relief, that is you usually see in the rivers, natural swimming pools, and petroglyphs is a mark down by the Ancient Civilization named Itaquatiara (in a language spoke by Indian meaning Stone carved). And this Civilization were here between 2 or 6 thousand years B.P (Before Present).

The next topic I'm gonna talked a little bit more Archaeology.