'Pits' in the Bible

Now the vale of Siddim was full of slime pits; and the kings of Sodom and Gomorrah fled, and they fell there, and they that remained fled to the mountain.

Come now therefore, and let us slay him, and cast him into one of the pits, and we will say, And evil beast hath devoured him: and we shall see what will become of his dreams.