Campi Flegrei Caldera (image) Geological Society of America Share Print E-Mail Caption View of the eastern part of the populated Campi Flegrei caldera from the Camadoli Hill. The volcano is the source of the Masseria del Monte Tuff eruption 29,000 years ago. More than 300,000 people live within this active caldera that has experienced more than 60 eruptions in the last 15,000 years. One of these recent eruptions formed the small Nisida cone that is seen lying just off the mainland. The Bay of Naples and Capri can be seen in the background. Credit Photo by Victoria Smith. Usage Restrictions Photo by Victoria Smith. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.