The Campi Flegrei Dilemma

Campi Flegrei, the famed “Phlegraean Fields” (Fields of Fire) caldera just west of Naples, is not your average volcano. This super-volcanic caldera spans some ~13km across, buried partly beneath the Bay of Naples and largely overlapping with towns like Pozzuoli, Bacoli, and Quarto, and is home to hundreds of thousands of residents.