Sites of Interest
Location: Oil Drum Alley
Items: 50 Bananas, 1 Red Balloon
Walkthrough: From the start, bounce off Gnawty while he's on the platform to reach the rope found on top of the screen. Use the rope to break the patch found on the ground to get the TNT Barrel. Finally, use the barrel to destroy the first drum you'll come in contact with. Jump into the hole.
It's not unlike the few bonus rooms you have been into in the game. You start inside a rotating barrel cannon, awaiting for your "fire" command. You can actually collect all 50 bananas in this room, but you have to determine where the barrel is below so that you can land back in it. Blast out of the barrel when it is pointing up and is in the middle of the bonus level to collect the red balloon.