Shuttle loop

Shuttle Loops are a common element in the Sonic the Hedgehog games. First appearing in Sonic the Hedgehog , it usually consists of a loop-dee-loop along the pathway. A character usually can't run through the shuttle loop unless they're running fast enough. They will fall to the bottom and be able to run out of it.

In the game Super Smash Bros. Brawl a Shuttle Loop can be seen in the backround of arena Green Hill Zone with detailed Tails, Knuckles, and Silver running thought it.

Zones with Shuttle Loops

 * Green Hill Zone
 * Emerald Hill Zone
 * Chemical Plant
 * Angel Island Zone
 * Emerald Coast
 * Seaside Hill
 * Leaf Storm
 * Water Palace
 * Mirage Road
 * Night Carnival
 * Frog Forest
 * Apotos
 * Sweet Mountain
 * Radical Highway
 * Machine Labyrinth