A Barrel Cannon course, entered by using Baboon Blast.
Baboon Blast is one of the moves used by Donkey Kong during the events of Donkey Kong 64 that helps him reach a special Bonus Level. This move can be purchased from Cranky's Lab for 3 Banana Coins starting in Jungle Japes. To use it, must press the Z button while Donkey Kong is standing on a Kong Pad with the shape of his head on it. If done correctly, Donkey Kong shoots up into the sky and enters a special Bonus Barrel that contains a Golden Banana. In this Bonus Level, Donkey Kong has to shoot from Barrel to Barrel and attempt to reach the end. This usually rewards Donkey Kong by a Golden Banana or by activating another event on the stage.