he was returned to the campi flegrei museum in 2018.w safe from marine organisms. but the artefacts that remain below the sea, including the precious floors that make up the largest collection of underwater roman mosaics in the world, remain at risk. finally, it was time for me to go down and see it for myself. i was invited to join the team testing new technologies to help better monitor the erosion, but also to help the public engage with the site in new ways. chiara petrioli is professor of computer science at the university of rome "la sapienza", and the interdisciplinary project musas‘ site coordinator. she is behind one of the more ambitious aspects of musas — its underwater wireless sensor networks. so, what are the technologies you're testing here this week? this week, we are testing underwater drones supporting archaeologists in discovering the site. we are testing underwater wireless sensor networks that allow to gather in real—time, data on the conservation status of the site. the water quality, the c02, because here we have

campi flegrei is one of the 29th super campi flegrei is one of the 20 known super volcanoes on the planetg with the volume thousands of times stronger than an average volcano. vincenzo tells me that if it were to blow at maximum capacity today, it would make the ad79 eruption of mount vesuvius that destroyed pompeii look like a puppies sneeze. carmine minopoli is a researcher at the national institute of geophysics and volcanology. he walked me through how the monitoring system works, but before he did, we spoke in one of the stranger places i've ever done an interview. inside a building that had been abandoned because of the heat and gases caused by the volcanic vents beneath it. all of that volcanic activity remains today. but it is also what put baiae underwater 5000 but it is also what put baiae underwater 1500 years ago. the water has helped preserve the artefacts, but it can also damage them. barbara, director of the unit of underwater archaeology at italy's high institute for conservation and restoration, has been working at baiae since 1993. so 1500 years it's been underwater. wha