Martin Avidan and Bob Porter prepare to aid climb up the first pitch of Zodiac, a 16 pitch 5.11 A3+, route in Yosemite National Park, California.

1002539tif california el capitan yosemite national park action adult adventure aid climbing backcountry base climbing color image confidence difficult extreme sports friends granite hard work horizontal male man men mountaineering outdoors photography preparation risk rock climbing teamwork two people yosemite national park california usa