Long day hike to the top of Half Dome, Yosemite National Park, with outstanding views of Vernal and Nevada Falls, Half Dome, Yosemite Valley and the High Sierra.<br />The trail is 14 mi/22.4 km long (round trip, via Vernal and Nevada Falls), elevation gain 4800 ft/1475 m. Two metal cables allow hikers to climb the last 400 feet to the summit.