📜 Roman-era subterranean tunnels and pools on Ponza Island, believed to be an elaborate fish farm for moray eels.🔍 Archaeological site linked to an ancient legend of Pontius Pilate, located below Emperor Augustus' imperial villa. # Why Go 🏛️ Explore ancient Roman engineering and history🐠 See unique Roman fish farms for moray eels🚤 Accessible via boat tours around the island🗿 Discover archaeological findings like statues and oil lamps # Why Avoid ⚠️ Caves are now partially underwater, only accessible by boat tour. # Tips 🚤 Book a boat tour around Ponza island to visit the caves.🚤 All boat tours around the island stop by the caves. # Cost 💰 Boat tours start from €30-€40.