16,500 BP), and include the image of a bird, the first figurative representation known so far from a pre-Natufian Epipalaeolithic site, together with geometric motifs such as chevrons, cross-hatchings, and ladders.[14] Some of the engravings closely resemble roughly contemporary European finds, and may be interpreted as "systems of notations" or "artificial memory systems" related to the timing of seasonal resources and related important events for nomadic groups.[14]