Nearly twenty years in the making, The Climbers by photographer Jim Herrington shares a stunning collection of portraits of icons in mountaineering — from Beckey, Cassin, and Diemberger to Messner, Robbins, and Bonington, rugged individualists who, from the 1920s to the 1970s, used primitive gear along with their considerable wits, talent, and fortitude to tackle challenging climbs around the world.