The Catacombs of Milos are an ancient underground burial site located on the Greek island of Milos. Dating back to the early Christian period, these catacombs consist of a network of tunnels and chambers carved into volcanic rock. They are one of the largest early Christian burial sites in Greece, featuring over 1,000 tombs. Visitors to the catacombs can explore the well-preserved remains of early Christian art and inscriptions. The site reflects the historical significance of Milos as a center for early Christianity and offers insights into the burial practices of the time.