How Does the Birnam Wood Prophecy Come to Be?
The Birnam Wood prophecy is a reference to a speech made by Macbeth in Shakespeare's play of the same name. In the speech, Macbeth says that he will not be defeated until Birnam Wood comes to Dunsinane Hill. This prophecy comes true when Malcolm's army march on Dunsinane Hill carrying boughs from Birnam Wood as camouflage.