Burning Bog (まっかに もえる どくぬま?) is the secret area in the Lushlife Murk. Most of the action takes place on top of tin boxes as they cross the rivers of poison. Fireflinger Groinks return in this area, and provide a constant threat to Captain Olimar and his group of Pikmin, considering that there is not much room to escape from the fireballs with whilst on top of the tin boxes. On top of that, some of the parts that are explored on foot have geysers of poison shoot out blasts into the air at certain intervals.
This area is easily one of the hardest of the entire game: the player must progress above a river of poison for the majority of the area, while being careful with the many enemies they encounter. Especially, the player must watch out for the Fireflinger Groinks which, because of the fireballs they shoot, add to the overall difficulty of the area. Moreover, the player will encounter some poison geysers. There are three treasures in this area: the Tangerine Paste, dropped by a Puffstalk, the Ever-Night Windows, accessible through a corridor, and the Training Rocket. This treasure is hard to get, because it requires the player to get a bomb rock, and then to travel through the last half of the area while avoiding the fireballs of the many Fireflinger Groinks. Then, the player can use the bomb rock to destroy a cobblestone block right before the end of the area, in order to get the treasure.
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