Genesis 19:24-26

24Then the Lord poured sulphur that was on fire down on Sodom and Gomorrah. It fell from the sky like rain.

25In that way God destroyed those cities and everything in the valley. He killed all the people who lived in those cities. And he killed all the plants that grew on the land.

26But as they ran away, Lot's wife looked back at the city. When she did that, she became a large piece of salt, like a pillar.