The city of Pompeii is arguably one of the most famous sites in Italy, primarily known for the devastating volcanic eruption that destroyed the city and killed its 11,000 inhabitants in 79 AD. Along with Herculaneum and many nearby villas, Pompeii was buried beneath 13 to 20 feet of ash and pumice after the eruption of Mount Vesuvius and was lost to the rest of the world until it was rediscovered in 1599, then more fully unearthed in 1748 by Spanish engineer Rocque Joaquin de Alcubierre. Pliny the Younger described the eruption and resulting catastrophic loss of life in a letter he wrote while witnessing the destruction from a distance. His uncle, the Roman admiral Pliny the Elder, died while attempting to rescue citizens.