'Caves' in the Bible

And the hand of Mid'ian prevailed over Israel; and because of Mid'ian the people of Israel made for themselves the dens which are in the mountains, and the caves and the strongholds.

And the men of Israel saw that they were in a strait (for the people were distressed); and the people hid themselves in caves, and in thickets, and in cliffs, and in strongholds, and in pits.

To dwell in gloomy gorges, in caves of the earth and the rocks:

And they shall go into the caves of the rocks, and into the holes of the earth, from before the terror of Jehovah, and from the glory of his majesty, when he shall arise to terrify the earth.

For the palace shall be deserted, the multitude of the city shall be forsaken; hill and watchtower shall be caves for ever, a joy of wild asses, a pasture of flocks;

Say thou thus unto them, Thus saith the Lord Jehovah: As I live, verily they that are in the waste places shall fall by the sword, and him that is in the open field will I give to the beasts to be devoured, and they that are in the strongholds and in the caves shall die of the pestilence.