Bottle Grotto

Bottle Grotto is the fourth dungeon of Link's Awakening. In it, Marty acquires the Pegasus Boots and the Sea Lily's Bell. The game inaccurately describes it as Level 2.

This is one of the hardest dungeons in the game to find, as it can only be accessed by going through parts of two previous dungeons.

The miniboss of the dungeon is Stirbys, a stack of kirbys that throws bombs at you. It can be easily defeated with the Magic Rod.

About halfway through the dungeon changes in appearance, becoming the "true dungeon" which is darker and has more powerful enemies. As the dungeon does not have a proper boss, this change may have been meant to compensate for the lack of challenge. It doesn't.