In 1967, 12 young men attempted to climb Alaska's MountMcKinley - known to the locals as Denali - one of the most popular and deadly mountaineering destinations in the world. Only five survived. Journalist Andy Hall, son of the park superintendent at the time, investigates the tragedy. He spent years tracking down survivors, lost documents, and recordings of radio communications. In Denali's Howl, Hall reveals the full story.
"A study in human behaviour"