Okay, so I'm a part of a 4-H team that competes in Horse-bowl, which is basically jeopardy on horses with buzzers that tests teams of 4-5 players on their knowledge of horses. Questions can range from ancestry, breed organizations, barns, insurance, conformation, tack, etc (basically everything is fair game).

In any case, my team and I visited the Kentucky Horse Park and saw a picture of a four horse hitch that had the horses lined up next to each other and the outermost horses on either side had their heads tied around to the outside whereas the two middle horses had their heads facing forward. Can anybody tell me what kind of hitch this is and why the horse's heads are tied to the side? Thanks loads.