The town of Pompeii was destroyed and completely buried during a long catastrophic eruption of the volcano Mount Vesuvius spanning two days in 79 AD. The eruption buried Pompeii under meters of ash and pumice, and Pompeii was lost for nearly 1,600 years before its accidental rediscovery in 1592. The date of the eruption in 79 A.D. is known through a letter of Pliny the Younger which reads nonum kal. septembres, namely “24 August”. This date was contained in the variant universally considered the most reliable and the manuscript has been accepted as safe so far, although some archaeological evidence emerged were in bad agreement with a summer date.