Celtic labyrinths are found among carvings at Camonica Valley, occupied by the Celts early in the first millennium, most older than the one Knossos or Classical style example found there. The mythology associated with the labyrinths also suggest Celtic origin. For example, the labyrinths containing eyes or a figured with horns and a snake about it's waist imply the deity Cernunnos. Lastly, Celtic examples resembling the Cretan model but featuring path-line reversal (the path of one is traceable as the line of the other) suggest Celtic pre-knowledge of their construction. Methods of constructing Classical labyrinths from figure with serpent through waist and ocular spiral may be demonstrated.