Priests of Isis perform a water ritual

White-robed priests of Isis perform a water ritual as chanting devotees line the steps of the goddess’s temple in this wall painting from Herculaneum. Herculaneum was an ancient Roman town, located in the modern-day commune of Ercolano, Campania, Italy. Herculaneum was buried under volcanic ash and pumice in the Eruption of Mount Vesuvius in 79...