Author of this posting: Carlos
Talking about archaeology articles is not easy writing about them, after all I'm not an expert, I'm a single Tour guide and curious, but today I'm going to continue talking about it, in particular Petroglyphs, they are very common in Brazil and in several countries. Mostly are located next to reservoirs of water, waterfalls, also known as Engravings in low relief. Most of Petroglyphs are unrecognisable, I mean, difficult to describe what the Indigenous people engraved on the rocks, mostly are abstracts, enigmatic and difficult to understand, even for Archaeologists. Check out the pictures bellow.
Petroglyphs: It's a Rock art (engravings) usually located next to water's reservoirs, waterfalls and rivers also known as Engravings in low relief, identifiable each scenes is difficult for archaeologists that's why the most engravings are abstracts and unrecognisable ones.
The terminology Petroglyph, should not be confused pictograph, which is an image drawn or painted on a rock face, they are associated with prehistoric civilization.
The word comes to Greek Petros, which means: Stone and Glyphein: Carve synonym for Engravings, that's it.
Rio das Ostras (Oyster's River, Brazil)
Pedra do Ingá, Paraíba State, Brazil