The lack of cult statues in Gallic shrines of the second Iron Age is one of the most solid common places in the archaeology of sanctuaries. It is even one of the first criteria used by specialists to distinguish them from their Roman period successors, built to house a figurative representation of the honoured divinity. Suggested by Diodorus, in his legendary account of Brennus saccage of Delphi, this statement is contradicted by Caesar, though, who explicitly mentions divine effigies of Mercury (BG, 6.17). This paper proposes to reconsider this thematic in the light of archaeological discoveries made over the past thirty years: from the rare preserved examples of Gallic stone- or wooden statues, to their iconographic representations, up to the traces that they may have left within the temples grounds. Particular attention is paid to the central cavities, generally interpreted as “autels creux”, which may have served as implantation pits for large wooden statues such as the one in Geneva.