This isn't Viola who was working the rides at the time. These are two other elephants held captive by the Cole Bros Circus. I took this video behind the big top where the staff trailers were parked. Experts on elephant behavior consider this nervous rocking as symptomatic of stress and frustration. These elephants, if free to live and roam, can cover as much as thirty miles a day. Here, they are held captive to stand all day until it's time to perform.