Checkpoint 2->3 | World 1 - Zone 1 (Sunny Glade) GW2: Super Adventure Box Guide

Series of jumps leading from checkpoint 3 to fourth hidden room.

Between checkpoint 2 and 3 you have to deal with a narrow corridor, you won't see it right away, but at the top there's another hidden room. The Infantile Mode allows you to jump right to it from highest point of rainbow to the left, but in normal mode you have to reach the third checkpoint, then turn back to perform a series of jumps depicted on the screenshot above and then blow up pile of rocks on the wall with mini-bomb. In the room you have to collect six Baubles.