The Dactyls of Mount Ida in Crete invented the art of working metals into usable shapes with fire; Walter Burkert surmises that, as the societies of lesser gods mirrored actual cult associations, guilds of smiths corresponded to the daktyloi in real life. According to Hesiod, they also discovered iron in Crete. Three Phrygian Dactyls, in the service of the Great Mother as Adraste (), are usually named Acmon (the anvil), Damnameneus (the hammer), and Celmis (casting). Of Celmis, Ovid (in Metamorphoses iv) made a story that when Rhea was offended at this childhood companion of Zeus, she asked Zeus to turn him to diamond-hard adamant, like a tempered blade. Zeus obliged.