Photographers may submit entries in four categories: Wildlife, Plants, Landscape, and People, with a limit of one photograph per category per photographer. Prints must be 8×10, unmounted and unframed, and each submission must also include a digital copy on a thumb drive. Photos must have been taken in Palo Duro Canyon State Park, be no more than two years old, must not have won a previous Palo Duro Canyon photo contest, and may not display any watermark, title, or identifying information on the front of the image.