The Corn Maze in Donna Presents: Muddy Corn Dawgs II 5K Obstacle Course. This is a Superior Course with over 3-Hundred acres of private land that includes obstacles like no other in the Valley. Obstacles include but not limited to Huge Monster Tires, Mud Pits: shallow and deep, Drainage Ditches both wet and dry, Caterpillar Ditch Run, Thorny Thicket Cactus Run just to name a few, and more to be included.