February 20, 2012
In this undated handout photo provided by the Yosemite National Park Service, the waterfall from Glacier Point is shown in Yosemite. A window of time opens annually in the park when nature photographers wait until the moment when the sun and earth align to create this fleeting phenomenon. This marvel of celestial configuration happens in a flash at sunset in mid-February, if the weather cooperates. The setting sun illuminates the waterfall so precisely that it resembles molten lava.
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A window of time just opened in Yosemite National Park when nature photographers wait, as if for an eclipse, until the moment when the sun and earth align to create a fleeting phenomenon.