'Clefts' in the Bible

Behold, I will send for many fishermen, says Yahweh, and they shall fish them up; and afterward I will send for many hunters, and they shall hunt them from every mountain, and from every hill, and out of the clefts of the rocks.

As for your terror, the pride of your heart has deceived you, O you who dwell in the clefts of the rock, who hold the height of the hill: though you should make your nest as high as the eagle, I will bring you down from there, says Yahweh.