The most famous eruption of Mount Vesuvius happened in 79 AD and is infamous for burying the Roman cities of Pompeii and Herculaneum. It kicked off with a massive cloud of ash and gas shooting high into the sky, followed by a fast-moving surge of hot debris that covered the area within hours. This catastrophic event not only resulted in a tragic loss of life but also preserved Pompeii in incredible detail, giving us a unique glimpse into Roman life and society from that era.