Filiform rock art appears as a spontaneous technique, more simple and immediate than pecking, good either for autonomous strands of expression, or for sketches and first drafts regarding works of painting or pecking. According to the order of presentation of the session's papers during the XVII IUPPS (UISPP) Conference in Burgos, the articles published here are the following: Late prehistoric incised rock art in southern Europe: a contribution for its typology, by Fernando A. Coimbra, where the author presents a preliminary typology of this kind of rock art, divided in two groups (geometric...