The Mushroom Grotto is a location, hidden on the left side of Mushroom Forest. It is populated only by Elder Shrooms, Shrooms, and Poisoned Shrooms. It is a long tunnel with an overgrowth of mushrooms, with a poisonous section in the middle. It is recommended that players are at least level 5 before entering, due to the level of the enemies there. Mushroom Grotto is also the spawn location of Chad, the mushroom boss.