A map of World 1
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The Cave of Chomp Rock is the third level of World One in the games Super Mario World 2: Yoshi's Island and Yoshi's Island: Super Mario Advance 3.
The level revolves around Chomp Rocks and the appearance of Nipper Plants.
Yoshi starts off in a field with a huge pipe in the middle, which leads into a cave. After getting into it, Yoshi encounters a Chomp Rock. The Chomp Rock collides against a small pole of sorts and Yoshi must follow it. After hitting the Info Block and learning about Ground Pounds, Yoshi may destroy a small box to the right to collect five stars. After this optional Yoshi must continue forward and will encounter Nipper Plants. There are also some coins scattered around, which Yoshi can collect. After this, Yoshi encounters the second Help Block in the level. Now Yoshi needs to proceed forward, before encountering a spot in which there are several mushrooms. If Yoshi keeps going down, he will find a Flower, as well as two red coins and two Lantern Ghosts. The level continues its maze-like structure until the end, with Nipper Plants. A key can be found in the level which opens a door, where Yoshi can play a minigame for a 1-UP. The key is held by a Fly Guy in an area with two red mushrooms and a blue one, in which Nipper Plants fall from above as spores and there is a single Lantern Ghost.
Once Yoshi is outside, he is in the field again. There are two Piranha Plants and a Fly Guy holding a 1-UP in this area. After that, the level ends.
 In-game help information (Yoshi's Island: Super Mario Advance 3)
- "Pound the Ground: Press Down on the Control Pad while in the air to make Yoshi pound the ground. This move has many uses. It rocks!"
- "There are two controller configurations for egg-throwing. Would you like to switch? (Yes) (No)"
 Names in other languages
Puchi Pakkun no Dōkutsu
|Cave of Petite Pakkuns (Petite Pakkun being the Japanese name of Nipper Plants)
||La cueva de la Roca Chomp
||Grotte des Mini Piranhas
||Cave of Mini Piranhas (Mini Piranha being the French name of Nipper Plants)
||La grotta del Masso Tritatutto
Qiánrén huā dòng
|Qianren Flower Cave (Qianren being the Chinese name of Nipper Plants)