I guess the answer is nature . I'm not sure .
It is 30,000 BCE
They were discovered in france
art that does not portray figures or objects; art without real models or subject ... on formal elements (the visual elements, design principles) to carry its message ... elements, such as a line, shape, color, texture, that are used by artists to create imagery ... using a series of closely spaced parallel lines to achieve a similar effect.
