Numbers 16:31-33, 35

The words were hardly out of his mouth when the Earth split open. Earth opened its mouth and in one gulp swallowed them down, the men and their families, all the human beings connected with Korah, along with everything they owned. And that was the end of them, pitched alive into Sheol. The Earth closed up over them and that was the last the community heard of them.

Then GOD sent lightning. The fire cremated the 250 men who were offering the incense.