Isaiah 34 is about the destruction of Edom as the prophet Obadiah also wrote. But notice the similarity between the above verses an that in Revelation:
"and the stars in the sky fell to earth, as late figs drop from a fig tree when shaken by a strong wind. The sky receded like a scroll, rolling up, and every mountain and island was removed from its place." Rev 6:13,14His judgment upon Edom is a foreshadowing of his judgment in Revelation upon all nations. Thus Isaiah first speaks of this foreshadowing.
"The LORD is angry with all nations; his wrath is upon all their armies. He will totally destroy them, he will give them over to slaughter." Is 34:2which follows in Revelation 6:
Then the kings of the earth, the princes, the generals, the rich, the mighty, and every slave and every free man hid in caves and among the rocks of the mountains. They called to the mountains and the rocks, "Fall on us and hide us from the face of him who sits on the throne and from the wrath of the Lamb!" Rev 6:15,16Thus throughout the Old Testament there are foreshadows of what is to come, or in some cases what has already come about. In many cases what has happened reflects what is happening and what will happen. For God is the same yesterday today and forever.