'Rocks' in the Bible

When the men of Israel saw the danger they were in, (for the people were troubled,) they took cover in cracks in the hillsides and in the woods and in rocks and holes and hollows.

Then Saul took three thousand of the best men out of all Israel, and went in search of David and his men on the rocks of the mountain goats.

Look! you have seen today how the Lord gave you up into my hands even now in the hollow of the rocks: and some would have had me put you to death, but I had pity on you: for I said, Never will my hand be lifted up against my lord, who has been marked with the holy oil.