Chris McNamara uses a sky hook to move higher while rock climbing Mescalito on El Capitan in Yosemite National Park, California. By the time McNamara was 18 years old he had rock climbed the 3000 foot high El Capitan more than 50 times. El Capitan is considered a big wall and usually requires aid climbing.

vertical color photo man male one rock climbing aid climbing mountains big wall yosemite national park california united states photography outdoors color image chris mcnamara