Genesis 14:10 in the World English Bible
Now the valley of Siddim was full of tar pits; and the kings of Sodom and Gomorrah fled, and some fell there. Those who remained fled to the hills.
Context
9 With Chedorlaomer the king of Elam, and with Tidal king of nations, and Amraphel king of Shinar, and Arioch king of Ellasar; four kings with five.
10 And the vale of Siddim was full of slimepits; and the kings of Sodom and Gomorrah fled, and fell there; and they that remained fled to the mountain.
11 And they took all the goods of Sodom and Gomorrah, and all their victuals, and went their way.