The four Magic Rings were created by Uncle Andrew Ketterly, and contain some of the magic dust from Mrs. Lefay's box. Two rings are yellow and two are green, and when one touches a yellow ring, it takes you to the Wood in between the Worlds, and touching a green ring takes you out of the Wood. Digory and Polly uses the rings to travel to Charn, back to London, and then to a brand-new Narnia. After the events of the Magician's Nephew, Digory and Polly bury the rings at Aslan's command. Peter and Edmund recover the rings many years later, but never have the opportunity to use them.