Genesis 14:10

And the vale of Siddim was full of slime-pits; and the kings of Sodom and Gomorrah fled and fell there; and they that remained fled to the mountain. This was the outcome of the battle: the five southern kings were routed by the armies of the north and sought to save their lives. The kings of Sodom and Gomorrah were familiar with the country and fell into one of the asphalt-pits which abounded in the neighborhood, that is, they quickly hid themselves there, while their allies fled to the secluded canyons of what was afterward the country of Moab, where the many hiding-places prevented their being found by the enemy.