Ski with a naturalist. In conjunction with the Appalachian Mountain Club, Great Glen Trails offers you the chance to really get to know Pinkham Notch. When you ski with a naturalist, you will learn about the flora and fauna that make our corner of the world so special. You’ll scout for tracks in the snow. You’ll learn about the different trees in the Glen. You’ll listen for distinct bird calls. You’ll truly begin to understand how the ecosystem works in Pinkham Notch.