From the Super Mario Wiki
Frustration is a level that appears in Yoshi's Story, as one of the levels in the Summit World. The level takes place on the peak of one of Yoshi's Island's mountains, and features many bottomless pits. The Centipedes make their only appearances in this level, as do the Bumpties. Huffin Puffin also makes its second appearance in this level. The only minigame found in this level is the Melon-Carrying minigame, which must be completed with a Centipede trailing behind. The level also feature wooden wheels that the Yoshis must use to access further in the level.
Don Bongo is the boss of this stage. The area where Yoshi fights Don Bongo seems to be part of Jelly Pipe because of its background.
The high mountain air was freezing cold! How much could they take? It was scary, so high up! They carefully crossed the canyons and cliffs. Then they met Don Bongo! He was stomping mad, but the Yoshis put him on ice.
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