New Super Mario Bros. U Blind Walkthrough Part 25: One Puzzling Level!

Yeah, just one level this part, apparently. It wasn't a hard stage, but when you see where they hid something, you'll be rather stunned and see why it gave me such ire... Just look, it's completely unmarked with no indication that there is another area there...

-Time Stamps-

0:00 Rock-Candy Mines-5 - Walking Piranha Plants! (Both exits)

Enjoy!