From Plimsoll Productions, Special Follows Alex Honnold and Tommy Caldwell on an Expedition to Attempt a World Speed Record Traverse of the Five Spires on the Infamous Devils Thumb, a 9,000-foot Alaskan Peak Regarded as One of the Most Dangerous Mountains in North America THE DEVIL’S CLIMB Premieres Oct. 17 at 9/8c on National Geographic […]