Job 30:6
They dwell in the chasms of the valleys, in holes of the earth and in rocks.
Judges 6:2
And the hand of Midian was strong against Israel. Before the faces of Midian, the sons of Israel made themselves dens in the mountains, and caves and strongholds.
1 Samuel 22:1-2
And David left there and escaped to the cave Adullam. And his brothers and all his father's house heard, and went down to him there.
Isaiah 2:19
And they shall go into the holes of the rocks, and into the caves of the earth for fear of Jehovah and for the glory of His majesty, when He arises to shake the earth terribly.
Revelation 6:15
And the kings of the earth, and the great men, and the rich, and the chief captains, and the mighty men, and every bondman, and every freeman, hid themselves in the dens and in the rocks of the mountains.