This collection of works is created to remember that the styles of figurative painting, symbolism and abstract art were conceived by primitive man, in the caves of prehistory, at least in their embryonic stage. Some colored geometric shapes, found in cave paintings, symbols designed and codified by Professor André Leroi Gourhan, are reviewed, transfigured, idealized, dreamed, reinvented in the works of Andrea Benetti, who wants to pay an appropriate homage to the true origin of the abstract art. This collection of works consists of bas-reliefs created with chalk on canvas and subsequently antiqued with natural substances such as cocoa, turmeric, henna, karkadè, coffee and finished with oil colors.