Eruption overdue: Supervolcano in Italy is swelling, steaming heavily and spewing more gas. As of: February 28, 2024, 12:01 p.m By: Johannes Welte The supervolcano near Naples in southern Italy is causing unrest again.

New swarm earthquakes accompany the uplift of the area to new record heights. And the craters seem to be steaming like never before. The Phlegraean Fieldssupervolcano consists of a huge crater, a gigantic caldera 16 kilometers in diameter.