In Super Mario Wonder, Rolla Koopa Derby is one of the northern courses in the Pipe-Rock Plateau that cannot be reached because the path is blocked. To access this course, speak to the Poplin at the ...

A purple block after the halfway point flag leads to a room with two Koopas. Kill the Koopas to reveal the Green Star. After you blast through the long clear pipe, jump on the ? blocks to discover ...