Exploring Pompeii with an awesome guide. All around us, tourists began to run for the exits. In the distance, a low grumble poured over the valley between us and Mount Vesuvius. As infrequent yet massive drops of water left craters in the dust at our feet, Pompeii emptied out. Our guide, Ilaria, showed no signs of panic. She told us that the storm would pass without hitting us.