ScienceItalyThe enormous supervolcano that’s hidden from sight05:05This browser does not support the video element.ScienceItalyAnna Sacco12/16/2023December 16, 2023The Campi Flegrei west of Naples in Italy is a caldera — a cauldron-like hollow -- that spans more than 150 square kilometers. The area has a lot of seismic activity and the floor of the caldera is rising, triggering concerns that it might erupt. Copy linkAdvertisement
