Sites of Interest
Location: Mine Cart Madness
Items: 32 Bananas
Walkthrough: Can be found near the end of the level. You can spot the Bonus Barrel as you ride the final mine cart. You have to land on the platform first, then head left to bounce on the floating tires to get into the barrel.
In this room, you can find a moving floating island with a tire on it, and 32 bananas floating in the air. Use the tire to bounce and collect the bananas.