Much like the ancient city of Pompeii, Herculaneum was destroyed in the eruption of Mount Vesuvius in AD 79. The site was buried under 20 meters of ash and lava. Unlike the pyroclastic flow that burned and buried Pompeii, the thick flow of lava that covered Herculaneum carbonized the wood and other organic matter preserving it, leaving behind beds, doors, food, and many other items. While most of the residents were able to escape, the remains of 300 individuals were discovered in 1997 in the boat houses near the sea wall.