If you’ve ever been skiing, whether you were learning on the bunny slopes or flying down a black diamond run, you simply have to close your eyes to be transported back to that one unforgettable day on the mountain. If you’re like me, I bet you can still smell the crisp, clean, pine-scented air. Or maybe you even find yourself involuntarily squinting as you recall how the blinding sun reflects off the snow like a million glittering diamonds. Most of all, I’m sure you will never forget the exhilaration you felt as you soared over the powder, the wind rushing up to meet you until you feel like you will simply take flight at any moment. Whether you ski or snowboard, you know that there is nothing quite so magical as being on the side of a mountain, soaking up nature, having fun with your friends. Now, National Geographic wants to ensure you experience plenty more snow days like that one, and with their new book they’re going to show you 100 Slopes of a Lifetime that will leave your mouth gaping open in awe.