Stock photography, photos: Piedras Pintadas Stock photos of Piedras Pintadas. Petroglyphs at El Valle de Anton, Panama, Central America. No one really knows what these symbols mean, but they are said to represent a map of the area. Photograph: © Humberto Olarte Cupas Click for a larger image and more information Keywords associated with this stock photo: piedra, pintada, el, valle, de, anton, panama, panamanian, central, america, american, south, latin, petroglyph, symbol, ancestral, ancestor, writing, paint, painted, stone, huge, monolyth, monolythic