Mount Vesuvius, located near Naples in Italy, is an active volcano that is infamous for its eruption in AD 79, which completely destroyed Roman cities of Pompeii and Herculaneum. Only two letters by Pliny the Younger remain as eyewitness accounts of the event.
The volcano remains a threat up to the present day as it is located in the most densely populated volcanic region in the world. Since the eruption in 79 Vesuvius has erupted many times. It is the only volcano on the European mainland that erupted within the last hundred years. The last eruption occurred during the World War Second in 1944.