Top 10 Most Dangerous Volcanoes In The World
3. Campei Flegrei, Italy. At risk: Naples
In third place is Campei Flegrei near Naples in Italy, which poses even more of a threat to the city than Vesuvius. It erupts less frequently than Vesuvius, but is much closer to the city and has the potential for much larger eruptions. The western suburbs of Naples, a city of 4.4 million, are build inside its caldera.