St. Louis County, Missouri. St. Louis County is a county located in the far eastern portion of Missouri. It is bounded by the Mississippi River, the Missouri River, the Meramec River, and the state of Illinois. As of the 2015 Census Bureau population estimate, the population was 1,003,362, making it the most populous county in Missouri.
Mount Vesuvius is best known for its eruption in AD 79 that led to the burying and destruction of the Roman cities of Pompeii, Herculaneum and several other settlements.t was then built up by a series of lava flows, with some smaller explosive eruptions interspersed between them. However, the style of eruption changed around 19,000 years ago to a sequence of large explosive plinian eruptions, of which the 79 AD one was the most recent.
Today, Mount Vesuvius is the only active volcano on the European mainland. Its last eruption was in 1944 and its last major eruption was in 1631. Another eruption is expected in the near future, would could be devastating for the 700,000 people who live in the âdeath zonesâ around Vesuvius.