'Caverns' in the Bible

"They will enter caverns in the rocks and holes in the ground to escape the presence of the terror of the LORD, to escape the splendor of his majesty when he arises to terrify the earth.

They will enter caverns in the rocks and clefts in the cliffs, to escape the terror of the LORD and to escape the splendor of his majesty, when he arises to terrorize the earth.