Half Dome Yosemite man male young guy steep yosemite granite hiking climbing athletic outdoorsy outdoor tiring journey climb steps path trail tired way route hike progress movement achievement daring foot leg edge cliff fear scary dangerous Half Dome Yosemite man male young guy steep yosemite granite hiking climbing athletic outdoorsy outdoor tiring journey climb steps path trail tired way route hike progress movement achievement daring foot leg edge cliff fear scary dangerous Yosemite 530.