The iconography of the pre-Roman Celtic period is sparse compared to the great surge of visual symbolic activity which came about as a result of the catalyst born of the meeting between Roman and Celtic tradition. None the less, enough free Celtic iconography survives to demonstrate that there was some tradition, which awaited expansion and adaptation during the RomanoCeltic phase. Once Mediterranean artistic figural traditions arrived in the Celtic world, imagery vastly increased and, indeed, most image-types appeared for the first time under the stimulus of Graeco-Roman influences. Some divine images, as we have seen, were far removed from classical concepts, both in terms of artistic custom and religious expression. In others, influence from the Graeco-Roman world played an important part. Different image-types possessed a greater or lesser bias towards indigenous or Mediterranean concepts. Frequently, however, even if considerable influence from the Roman world was present, such iconography was adapted in a highly idiosyncratic manner to a Celtic divine context. An example of this is the classical theme of the Battle of Gods and Giants, adapted in the Celtic world to display the antithesis of positive and negative forces in a Celtic sky-cult. The balance and
iconography and epigraphy to complement each other. Deities of Roman origin may possess Celtic names but their imagery may remain classical, or vice versa. It would seem that the symbolic message could be conveyed either by epigraphy or iconography or by a blend of both. Thus, perhaps, the indigenous character of, say, the Celtic Mercury could be projected as long as either his surname or his physical appearance possessed a celticizing aspect.