Job 30:6
They have to live in dry riverbeds (the clefts of the valleys) (wadis), in holes in the ground, and among rocks.
Judges 6:2
The Midianites were very oppressive over Israel. So much so that the people of Israel hid from them in caves and other safe places in the mountains.
1 Samuel 22:1-2
David escaped from the town of Gath and he went to Adullam Cave. Once they found out where he was his brothers and the rest of his family followed him there.
Isaiah 2:19
People will go into caves in the rocks and into holes in the ground because of Jehovah's terrifying presence and the honor of his majesty when he rises to shake the earth.
Revelation 6:15
The kings of the earth, and the great men, and the rich men, and the military commanders, and the mighty men, and every slave and every free man, hid themselves in the caves and in the rocks of the mountains.