Hidden Mickey's have become very popular throughout the Walt Disney World Resort over the past decade. Typically formed with three circles (one for the head and two smaller ones for ears), these "Mickey's" are hidden all around the parks and even in the resort hotels. I love to point them out to my guests while I'm giving tours. I have my favorites in each park, but today I saw what is by far the best hidden Mickey ever created. It is amazingly unique in that it can only be seen on November 18th at exactly noon. Most Disney enthusiasts know this date to be Mickey's birthday. The Imagineers decided to pay tribute to the famous mouse over at the relatively new Under the Sea attraction in the Magic Kingdom. They carved part of the rock formation in the queue to allow the sun to shine through onto the base of a wall. The sun's rays are at the perfect angle on this day at noon to form Mickey's head. The formation only lasted for about 7 minutes, but it was quite a sight to see!