Mars Rover Curiosity captured again an interesting artifact on Mars, the latest image shows what appears to be old petroglpyphs recorded on a stone. Petroglyphs (also called rock engravings) are pictogram and logogram images created by removing part of a rock surface by incising, picking, carving and abrasion. Petroglyphs are sometimes easily defined based on the culture, religious beliefs, mythologies and legends of an ancient civilization placed rock formations to their descendants. Many ancient petroglyphs are thought to represent some kind of ritual language often depicting them with archetypal symbols. The petroglyphs etched in rock on Mars look like as human figures, and it is interesting that the same symbols are found in different parts of the planet earth created on dates where people could not have interacted with one another.
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