The Sierra Nevada mountain range in central California is filled with towering granite giants, but no other peak commands as much attention or respect as the vaunted El Capitan.Looming over Yosemite Valley, El Capitan is widely regarded as the most brutal challenge in rock climbing. Nearly 3,000 feet (900 meters) high, this California summit attracts climbers from all over the world, but few can say they’ve truly tamed it.