Deliberate mistake: Just after they've clashed with the Warg, while riding on Arod, Legolas lets loose his first arrow and hits a Warg in his face and it flips over. In this first shot, the background behind this Warg is the same background as in the very next shot. This first background shot is really the successive shot of this second background shot. The shot just after Gimli falls off his horse, is the third successive shot, only it's been flipped. The same men on horses are riding across the field in the background, as this was one piece of footage that was cut into three parts. Warg and riders were added to the image, to make them appear different and one was flipped. (00:11:05)