Iberian petroglyph man with ax automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_hacha.png
This petroglyph shows a man bent-over, signifying "old man", and without a belt or crotch line, signifying "poverty". The upper hand showing the palm at the same level as the heart signifies "good". The key to the meaning is given by the triangular symbol extending away from the buttocks.
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg
Petroglyph at Mutawintji National Park (New South Wales, Australia) manually traced from public domain image at http://en.wikipedia.org/wiki/File:Mutawintji_National_Park_Petroglyph.JPG