Eighteen essays from the 15th uispp congress which look at the iconography and symbolism of prehistoric art, focusing in the main on rock art. Papers include reports on new discoveries, such as some schematic Neolithic and Chalcothic engravingson the Ibor River in Spain, on particular symbols, such as Neolithic cruciform designs, and broader theoretical papers on issues such as the interplay between art and shamanism or the use of new techniques such as optical 3D measurements in the interpretation of rock art. Papers in English, Spanish and French.