Special Stage (Sonic Advance)

Special Stages in Sonic Advance are a series of special levels. Much like some of the previous Sonic games, the player is required to collect at least a certain number of rings to pass through two segments while avoiding bombs. The character rides a board riding through a bottomless hole.
 * For Special Stages in general, see here. 

Trivia

 * The boards the character rides on in the Special Stages somewhat resemble Extreme Gear from the Sonic Riders series games although the said series were released a few years later.