Fodor's Expert Review Birnam Wood

In Shakespeare's Macbeth, the future king meets three witches who prophesy his downfall "when Birnam Wood comes to Dunsinane." They were right. The trees of the once dense wood camouflaged the besieging armies approaching Macbeth's castle at Dunsinane. The Birnam Oak (now sustained by crutches) and the Birnam Sycamore are all that remain of the once great wood, though perhaps not as Macbeth knew it in the 11th century.