Climbers Tommy Caldwell and Alex Honnold first ascended the Devil's Thumb massif in a single day.

Climbers Tommy Caldwell and Alex Honnold made history by completing the first single-day traverse of the five granite towers of the Devil's Thumb massif in the Stikine Ranges, straddling the Alaska-British Columbia border. Despite past challenges, including Caldwell's kidnapping and injuries, they successfully navigated this dangerous terrain known for avalanches and storms. Their journey is featured in a National Geographic documentary, "The Devil's Climb."