First Ascent: Alone on the Wall

After gaining international climbing renown for his landmark free-solo of "Moonlight Buttress" (V, 5.12+, 9 pitches) in Zion National Park, Utah, in April 2008, 24-year-old Alex Honnold moves on to his next big challenge: the first free-solo of the "Regular Northwest Face" route (VI, 5.12a, 23 pitches) on Yosemite’s Half Dome.