Template:Levelbox Shifting-Floor Cave, or Rock-Candy Mines-7, is the seventh course of Rock-Candy Mines in New Super Mario Bros. U. Interestingly, not only does the completion of the course unlock Roy's Conveyor Castle, but it also creates a path to the first point after Grinding-Stone Tower.
Layout
The course's main gimmick is mechanical platforms, referred to as "shifting floors", that push through the gears in the middle.