The city of Pompeii is famous because it was destroyed in 79 CE when a nearby volcano, Mount Vesuvius, erupted, covering it in at least 19 feet (6 metres) of ash and other volcanic debris. The city’s quick burial preserved it for centuries before its ruins were discovered in the late 16th century. The subsequent excavation of Pompeii and the surrounding areas in the mid-18th century marked the start of the modern science of archaeology. The archaeological sites at and around Pompeii are important because they provide a unique source of information about many aspects of social, economic, religious, and political life of the ancient world.