Phlegraean Fields ( Campi Flegrei)
Anabrupt tremor announces to the entire Mediterranean basin that the giant is preparing to erupt. Thuds and bangs from within the Earth resonate along the coastal Campania, first agitating the wildlife and then the local inhabitants. After a few days, a white, cauliflower-shaped cloud bursts from the Phlegraean Fields, eventually reaching over 50 kilometers in height, with an impressive spread. From Naples, terrifying flashes and lightning can be seen within the black plumes that envelop the massive white cumuliform cloud.

The caldera began to show increased activity in the 1960s after a relative calm that lasted for centuries. Large-scale evacuations of Pozzuoli already took place in 1983 when a series of earthquakes and a ground uplift of 3 meters (10 feet) suggested that an eruption might be imminent… But then nothing happened.

But in reality, what are we describing?
The Phlegraean Fields are actually an ancient volcano, with particular morphological characteristics, so much so that it is defined (perhaps wrongly, as we will see shortly) as a “supervolcano,” on par with Lake Toba in Indonesia, the Yellowstone caldera in the USA, and the Aniakchak Caldera in Alaska.
How the Caldera Formed
But what exactly characterizes the area we refer to today as the Phlegraean Fields? Certainly the caldera!
Supervolcano? Really?
Let’s say that this is not actually a volcanological term. It was invented to emphasize the power of an American volcano around the 1940s,

But what type of volcanism characterizes this area?
The reconstruction of the eruptive history of the Phlegraean Fields tells us that this volcano tends to produce explosive eruptions, preferably of medium and small size, with very rare effusive eruptions:
In the end, we believe the question everyone wants a quick answer to is this: What is the current state of the volcano? Is there a real danger of an imminent eruption?
Well, let’s say right away that the matter is very controversial. Currently, the caldera is in a state of quiescence. This means there is no eruptive activity, but there is

Not All Volcanoes Are the Same
The first simple consideration is purely geographical. The Phlegraean Fields are about thirty kilometers away from Vesuvius.

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