Smoke clouds and bands of haze from the Rim Fire in the western Sierra Nevada loom up some 20 miles behind the famed granite monolith known as Half Dome, right center, seen from 11,500-foot Mt. Clark in Yosemite Valley in Yosemite National Park, Calif., Saturday, Aug. 24, 2013. Crews working to contain one of California's largest-ever wildfires gained some ground Monday against the flames threatening San Francisco's water supply, several towns near Yosemite National Park and historic giant sequoias. Containment of the Rim Fire more than doubled to 15 percent, although it was within a mile of the park's Hetch Hetchy Reservoir, the source of San Francisco's famously pure drinking water, officials said Monday. (AP Photo/Tami Abdollah) Photo: Tami Abdollah / AP2013
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