Alternate Route This level contains an alternate exit that leads to a cannon on the world map, which can blast you to World 5. Here's how to find it: Near the end of the level is a rep pipe high above that can warp you to the hidden flag pole, but it requires both the use of a Propeller Suit as well as the P-Switch a little ways before. Upon reaching the P-Switch, wait nearby for a few moments until the Pink-block on the track moves further up the track. Once it has, hit the switch, then make a mad dash toward the pipe by leaping from the pink-block to a series of newly formed blocks, just below the pipe--propeller from them (before they revert to coins!) into the pipe above to find the alternate exit.