Moving Walls

Moving Walls are a medium-common switchable object and can appear both upright or horizontally. Unlike other traps, they usually don't destroy robots, but keep them in place until freed, or alternatively, keep them from falling into pits. It is, however, possible to destroy a robot by crushing it with a movable wall.

Toggling the wall will make it shift until it appears to be mirrored at its central axis, which means it can retract and move back in place.