Intricately designed sterling silver ouroboros ring. From the Greek meaning ‘tail-devourer’, the symbol is a serpent eating its own tail. The oldest known ouroboros was found on a shrine in the tomb of Tutankhaman in Egypt in the 13th Century BC. The Ancient Egyptians understood time as a series of repetitive cycles, largely because of the cycles of the sun and the annual flooding of the Nile, an event that fertilized the lands surrounding the river and made agriculture and development possible. The Egyptians used the ouroboros symbol to represent cyclical time and the eternal cycles of life, death, and rebirth.