If you have been to Pompeii, you may have seen these casts. Plenty of bodies were discovered underneath all of the ash left behind by the eruption of Mount Vesuvius. People died almost instantly. Buried 6 meters deep in ash, which calcified over the centuries, the bodies were preserved in a protective shell of ash. When the skin and tissues decayed, they left voids in the layer of ash around them, in the exact shape of their final moments. In 1863, Italian archeologist Giuseppe Fiorelli came up