Located near the top of the world, Denali National Park is home to more than six million acres of extreme wilderness. Venture beyond the tourist hotspots and join National Geographic on a low-to-high-altitude trek through Denali's breathtaking ecosystems. Featuring cinematography of big game, glacier crevasses, and snowcapped peaks, Extreme Alaska: Denali National Park is an absorbing adventure through one of the Earth's most remarkable places.