Mount Vesuvius is a stratovolcano in the Gulf of Naples. It is the only volcano on the European mainland to have erupted within the last hundred years, although it is not currently erupting. Mount Vesuvius is best known for its eruption in AD 79 that led to the burying and destruction of the Roman cities of Pompeii and Herculaneum. Vesuvius has erupted many times since and is today regarded as one of the most dangerous volcanoes in the world because of the population of 3,000,000 people living nearby and its tendency towards explosive (Plinian) eruptions. It is the most densely populated volcanic region in the world.