On the very upper right, the small section of track that turns quickly into the wall, actually leads into one of the two track switches on this rolling ball sculpture (#64). The marble rolls straight into a small platform that tips, sending it on it's way. In the picture the arm is leaning to the right which, when the marble rolls onto it, will tip to the left sending the marble to the left and then getting ready to send the next one back to the right.

The spiral (the section of wire on the right, middle with the white ring on the center bottom, the marbles drop out onto the red section below) is what receives the 5 marbles that come in a row from the upper left marble collector. All 5 marbles spin around and around until they all get to the center, dropping through randomly. The keeps the motion of the sculpture different, each run of the marbles is not always the same.