It's hard for a photo to convey the enormity of Yosemite Valley, so here are a few figures that might help: see Bridalveil Fall, the little wisp of a necktie in the bottom of the photo? Six hundred feet high. (When John Muir first saw Bridalveil Fall, from the north rim, he figured it was about twenty feet high, perhaps the only time he ever undersold Yosemite's wonders.) See El Capitan jutting out from the far side of the valley? Three thousand feet high, the world's biggest granite monolith. See Half Dome just poking up from the rear of the photo? 8,800 feet above sea level, and 4,800 feet above the valley floor. See the clouds above the far horizon? More than a thousand miles wide and actually in orbit around Venus. And, oddly enough, only visible from Yosemite, the solar system's most mind-blowing place.