The conveyor belt of pyramids moves along at a moderate pace, moving the group deeper and deeper into the abstract tunnel. They travel for about fifteen minutes, during which not much happens - all until two other rows of pyramid blocks converge from either side, continuing to travel along with them as a grid.

Finally, the blocks forming the outside of the tunnel begin to shift as well, changing the shape of the interior and gradually opening an entrance - not unlike the eye of a camera shutter opening.

Of course then, while everyone is distracted, sets of six blocks will attempt to fly together, trapping each individual in a cube of stone with the flat sides facing inward.

Everyone has to roll to escape. Or, they can just stand there, that's fine too.