To go into; or, as they go into; i.e. "as they make their escape, they shall fling the idols away." The clefts of the rocks (comp. Exodus 33:22, the only other passage of Scripture where the word occurs).
The tops of the ragged rocks; rather, the rents, or crevices. The idea of hiding themselves from the awful majesty of God is kept up throughout (cf. Isaiah 2:10 and Isaiah 2:19; and see also Luke 23:30).