Half Dome has more than a dozen climbs leading atop Yosemite National Park’s most popular peak. “No temple made with hands can compare with Yosemite,” Muir wrote. Bears appear to Yosemite tourists all the time yet eluded me during my first years of Sierra sojourns. This Yosemite bear did not appreciate the author’s attention. Rangers constantly caution Sierra hikers about bears, and rightly so.