The Campi Flegrei supervolcano, situated underneath the city of Naples, Italy, has been showing signs of volcanic unrest since 1950, before ceasing in 2000. However, this restlessness resumed in 2005 at an increased rate, and by 2012, a yellow alert wasraised, indicating that the volcano could erupt at any time within the oming years.

On December 20, 2016, the alert level on the volcano was changed to a higher level after an article was posted in the Nature Communications, where scientists claimed that the volcano was at a critical degassing pressure status, which likely points to an eruption within the next 100 years.

An eruption of the Phlaegrean Fields would result in a widespread volcanic winter globally, and a high death and damage toll from the event. Scientists remain on high alert, and are monitiring the supervolcano even closer for any signs of an impending eruption, so a mass evacuation can be called for when it becomes neccessary to do so.