Lost World (Donkey Kong Land III)
From the Super Mario Wiki
Lost World is a world in the game Donkey Kong Land III. After the player collects all of the DK Coins, Baron K. Roolenstein will begin to battle him or her. Baron K. Roolenstein will attack by throwing bombs and firing laser beams.
In Donkey Kong Land III, a contest had taken place in which several contestants had to find the Lost World.
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