On our way out, lets take a look at the walking
mechanism. The leg you see here is attached to one of the walking
shoes. The shoes raise the rear edge of the tub about a foot off of
the ground, and shove the machine backwards about 6 feet. All walking
draglines can only move straight back. When you want to turn, the
upper structure must be turned so that the rear of the machine faces
the direction you want to take.