Storm Clouds, South Dakota

Photograph by Patrick Kelley

"Large powerful storms can be nearly a daily occurrence during the summer months on the South Dakota plains. This one felt very mysterious as it filled the sky with dark, heavy clouds and thunder that shook the ground. It was as if two worlds were colliding." Patrick Kelley See more photos , see winners' galleries , download wallpaper , and solve puzzles from the 2009 International Photo Contest.

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