Mechanism of "Earth Park !"

Between the south hemisphere and the escalator, set up a doorway and a figure wall painting with dots.

Put a cover on the south hemisphere. The cover is also divided into four parts.

There is a hole on the front cover to put the wiring cords through.

Fix the joints of the four covers with plates and tile-bricks.

With the figure wall painting, you can make the depth of the building !

On this, install a circular rail track.