Travel to Campi Flegrei, a dormant supervolcano in southern Italy, and discover how special properties of the rock beneath its surface have helped protect the region’s caldera (a large volcanic crater) from more frequent eruptions in these videos from NOVA: The Next Pompeii. Use this resource to examine how scientists analyze and interpret data on natural hazards, including the physical and chemical properties of materials, in order to forecast future catastrophic events.