Photo: Tommy Caldwell, Colorado climber, after his ascent of the Dawn Wall in Yosemite

Tommy Caldwell

Tommy Caldwell on Jan. 15, 2015, in El Capitan meadow in Yosemite National Park, Calif. Caldwell and Kevin Jorgeson became the first in the world to use only their hands and feet to scale, in one continuous push, the Dawn Wall of El Capitan, a sheer granite ediface in California's Yosemite National Park.