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For three weekends in a row, the Empire Polo Club in Indio will see nothing but huge festivals: Coachella, Stagecoach and, tucked in right between 'em, the Big 4. On April 23, Metallica, Slayer, Megadeth, Anthrax converged for one ultra festival. And here are the awesome, awesome fan shots. Click here to see a slideshow of the bands. All images by Christopher Victorio.