Omphalos: Carved oval-shaped stone representing the navel of the world that symbolized Apollo’s capacity as the god of divination. The relief bands on its surface depict the agrenos, the woollen mesh decorated with semiprecious stones that covered the sacred omphalos. According to the myth, when Zeus wished to find the centre of the Earth, he sent out two eagles flying from opposite ends of the world that met at Delphi. At that point, Zeus threw the magic stone, the omphalos. The depicted stone crowned the “Dancers of Delphi Column” (also known as “Acanthus Column”). It dates back to 330-325 BC.