Uncork the Waterfall
From the Super Mario Wiki, the Mario encyclopedia
To get to the waterfall, the player needs to climb up the mountain's cliff-side directly in front of them. Mario needs to make use of lifts, Wall Jumps, and F.L.U.D.D.'s Hover Nozzle to make it up to the top. Many of the platforms are also missing, and cleaning off the graffiti on the walls makes them reappear. As Mario climbs to the top, Glorpedoes roll down, leaving trails of graffiti behind them and damaging Mario if he comes into contact with one. Near the top of the cliff, the player meets a Noki who provides a springboard for Mario to use to reach the platform above.
At the top of the mountain is a Monty Mole in a cannon, on top of a large cork blocking the waterfall's flow. When Mario is far away from it, the cannon fires the Glorpedoes that have been rolling down the mountain. When Mario gets near, the Monty Mole throws Bob-ombs, though if Mario gets too close, the Monty Mole hides in the cannon. Spraying the Bob-ombs enables Mario to pick them up and throw them at the Monty Mole. Blasting the Monty Mole three times uncorks the waterfall and reward the player with the Shine Sprite.
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