Flexi Says: It can be difficult to determine whether a volcano is dormant or extinct. A volcano is classified as extinct when it can no longer erupt, while a dormant volcano can possibly erupt again. In 2021, the Fagradals Mountain volcano in southwest Iceland erupted after 6,000 years of dormancy. In 2019, scientists discovered an active magma chamber under the Ciomadul volcano in Romania, which last erupted around 30,000 years ago and had long been considered extinct. With better sensing technologies, some volcanoes like this may be reclassified if scientists determine that a magma chamber could produce a new eruption.
