On the morning of August 24, 79 AD — though some scholars now argue for a date in October based on pomegranate seeds and autumn clothing found in the excavations — Mount Vesuvius began its eruption. By the following morning, the city of Pompeii was buried under four to six meters of volcanic ash and pumice. Approximately eleven thousand people lived there. Somewhere between two and three thousand did not escape. The volcano that killed them preserved them, and what it preserved has told us more about ordinary Roman life than any literary source.