Mount Vesuvius

**Mount Vesuvius** (, ) is a stratovolcano on the Gulf of Naples, Italy. It is about  east of Naples. It is the only volcano on the mainland of Europe that erupted in the last 100 years. The last major eruption was in 1944. Two other important active volcanos in Italy, Etna and Stromboli, are on islands.

Mount Vesuvius is best known for its eruption in A.D. 79 which destroyed the Roman cities of Pompeii and Herculaneum. They were never built again. The towns were buried in ash so completely that later people who lived there forgot about them until they were accidentally discovered in the late 18th century.

The eruption also changed the way the Sarno River flowed, and raised the sea beach. Because of this, Pompeii was not on the river nor next to the coast anymore. Mount Vesuvius was also greatly changed. Many of the plants there died, and the top of the mountain looked different because of the strong eruption.

Vesuvius has erupted many times after that. Today, it is one of the most dangerous volcanoes in the world. About 3 million people live near this explosive volcano. More people live near Mount Vesuvius than any other volcano in the world.

Vesuvius has a long tradition of history and literature. A serpent (snake) called "Vesuvius" has been used in frescos of many _lararia_ (household temples) from Pompeii. In Capua, the words "IOVI VESVVIO" (_Jupiter Vesuvius_) show that he was worshipped as a power of Jupiter.

The historian Diodorus Siculus said that there was a story that Hercules once passed through the country of Cumae when he was going to Sicily. There, he found a place called "the Phlegraean Plain" (_phlegraion pedion_, "plain of fire"). It said that it was "from a hill which anciently (from a long time ago) vomited out  called Vesuvius." Giant "sons of the Earth" lived inside it. With the help of the gods, he helped the people there and went on. An ode by Martial in AD 88 suggests that Venus and Hercules were worshipped in the place that was destroyed by the eruption in AD 79.

## Name

The volcano was often called "Vesuvius" in the late Roman Republic and the early Roman Empire. It was also called _Vesaevus, Vesevus, Vesbius_, and _Vesvius_. Writers in ancient Greek called it "Οὐεσούιον" or "Οὐεσούιος". Many scholars think the word _Vesuvius_ was related to the Greek word "οὔ" (_not_) and σβέννυμι (_I quench_), so that it would mean "unquenchable". Others think it might come from ἕω "hurl" and βίη "violence", "violence".

## Appearance

Vesuvius has a large cone (_Gran Cono_) which is partly surrounded by the top of a caldera which was made when an earlier and much higher structure called Monte Comma collapsed. The Gran Cono was made during the eruption of AD 79. For this reason, the volcano is also called **Somma-Vesuvius** or **Somma-Vesuvio**.

## Eruption of 79 AD

Before Mount Vesuvius exploded in 79 B.C.E people who lived nearby did not even know that it was a volcano, because it had not erupted for 600 years. At about 1 PM, on August 24, AD 79, Mount Vesuvius erupted violently. It showered ash and pumice on the town of Pompeii, which is  away.

Today, people think the eruption of 79 AD lasted more than 19 hours. It was noticed by Pliny the Younger who described the mushroom cloud from the volcano as being in the shape of umbrella pine, a tree commonly found in the region. Pliny the Younger was the only person to write the story down.

There were many ways that people died. One was that the smoke that they breathed in was deadly because it dried in their lungs and formed glass. They also were buried by powdery ash from the volcano, which was all over them. Over time this ash turned to a sort of rock, protecting the bodies and the city from the weather and from robbers.

Vesuvius erupted 50 more times after the eruption in 79 AD, with the last eruption happening in 1944 and which is the longest interval since 79 AD. Vesuvius was named a national park in 1995.

## Related pages

- List of volcanos
- Dormant volcano