page_title: Mount Vesuvius
section_title: Eruptions
hierarchical_section_title: Mount Vesuvius / Eruptions
caption_attribution_description: Français&#160;: Procession de saint Janvier à Naples pendant une éruption du Vésuve, 1822. Dimensions&#160;: 98 x 130 cm&#160;; cadre&#160;: 128 x 161,5 x 9 cm. Matière et technique&#160;: huile sur toile.
context_page_description: Mount Vesuvius is a somma-stratovolcano located on the Gulf of Naples in Campania, Italy, about 9 km east of Naples and a short distance from the shore. It is one of several volcanoes which form the Campanian volcanic arc. Vesuvius consists of a large cone partially encircled by the steep rim of a summit caldera caused by the collapse of an earlier and originally much higher structure.
  The eruption of Mount Vesuvius in AD 79 destroyed the Roman cities of Pompeii, Herculaneum, Oplontis and Stabiae, as well as several other settlements. The eruption ejected a cloud of stones, ashes and volcanic gases to a height of 33 km, erupting molten rock and pulverized pumice at the rate of 6×10⁵ cubic metres per second, ultimately releasing 100,000 times the thermal energy released by the Hiroshima-Nagasaki bombings. More than 1,000 people died in the eruption, but exact numbers are unknown. The only surviving eyewitness account of the event consists of two letters by Pliny the Younger to the historian Tacitus.
  Vesuvius has erupted many times since and is the only volcano on the European mainland to have erupted within the last hundred years.
context_section_description: Mount Vesuvius has erupted many times. The eruption in AD 79 was preceded by numerous others in prehistory, including at least three significantly larger ones, including the Avellino eruption around 1800 BC which engulfed several Bronze Age settlements. Since AD 79, the volcano has also erupted repeatedly, in 172, 203, 222, possibly in 303, 379, 472, 512, 536, 685, 787, around 860, around 900, 968, 991, 999, 1006, 1037, 1049, around 1073, 1139, 1150, and there may have been eruptions in 1270, 1347, and 1500.
  The volcano erupted again in 1631, six times in the 18th century (including 1779 and 1794), eight times in the 19th century (notably in 1872), and in 1906, 1929 and 1944. There have been no eruptions since 1944, and none of the eruptions after AD 79 were as large or destructive as the Pompeian one.
  The eruptions vary greatly in severity but are characterized by explosive outbursts of the kind dubbed Plinian after Pliny the Younger, a Roman writer who published a detailed description of the 79 AD eruption, including his uncle's death. On occasion, eruptions from Vesuvius have been so large that the whole of southern Europe has been blanketed by ash; in 472 and 1631, Vesuvian ash fell on Constantinople (Istanbul), over 1,200 kilometres (750 mi) away. A few times since 1944, landslides in the crater have raised clouds of ash dust, raising false alarms of an eruption.
caption: Procession of Saint Januarius during an eruption of Vesuvius in 1822
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