The supervolcano Campi Flegrei is a 7.5 mile- wide cauldron. It was formed by the largest eruption in Europe and makes the caldera approximately 39,000 years old. In 2010, a study in the journal Current Anthropology reveals that the large prehistoric eruption expelled trillion of gallons of molten rock and a massive amount of sulfur. This caused a volcanic winter and lead to the demise of Neanderthals.
Half of the supervolcano Campi Flegrei is beneath Mediterranean waters while the other half is studded with cinder cones and smaller calderas. The area of the caldera has 24 craters and volcanic edifices.
The whole supervolcano Campi Flegrei has hydrothermal activity consisting of Sulfuric acid discharges from active fumaroles, steam, and boiling mud. Earthquake activities of the supervolcano span throughout the region reaching 125 miles south of Rome.
As the supervolcano Campi Flegrei coverage is wide, its eruption would be devastating to thousands of people. In the past 40,000 years, supervolcano Campi Flegrei has only two recorded major eruption. It’s last major eruption on 1538. It has expelled new material that created the cinder cone mountain Monte Nuovo.
The Washington Post reports that supervolcano Campi Flegrei, a 7.5-mile wide cauldron, is gradually more restless and is nearing its critical pressure point. Scientists have also detected slow movements on the grounds that indicate molten rock slowly filling Campi Flegrei’s magma chamber.
When the supervolcano’s threshold is reached, the decreased pressure on rising magma releases gas and fluid at 10 times than the normal rate. This would eventually lead to a large eruption that would kill 500,000 people living in and around it.
According to the Independent, the eruption of a supervolcano can expel a volume of material that is greater than 1,000 km3. This is thousands of times greater than normal eruptions. Hence, when the supervolcano Campi Flegrei erupts again, it will cause global catastrophic effects. Its impact is similar to a major meteorite that collides with the Earth.