The Catacombs of Milos are an ancient underground Christian cemetery located on the island of Milos in Greece, dating back to the 1st-5th century AD. These catacombs can be found near the modern settlement of Trypiti, close to the ancient city of Melos. The area is full of caves carved into volcanic rock, which were used as burial chambers in ancient times. The galleries vary in width and height, with tombs cut into walls and graves covered with stones. It's like stepping into a hidden world beneath the surface of this beautiful island!