From the Super Mario Wiki
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The player starts out on a metallic platform, in front of some gears. Tail Bob-ombs float down onto these gears as the player progresses. At the end of the gear section is a swinging platform that leads to some rotating platforms that leads to an area with Fuzzies. At the end of this section is a Warp Box.
In the next area is the Checkpoint Flag, which is in front of a gear platform with a Magikoopa on it. These gear platforms eventually lead to some yellow rotating platforms which lead to some rotating platforms which are in front of the Goal Pole.