Limestone Cavern (Japanese: だいしょうにゅうどうGreat Limestone Cave) is a dungeon that can only be played in a Special Episode called Here Comes Team Charm! in the game Pokémon Mystery Dungeon: Explorers of Sky. This dungeon is the last level in a series of Mystery Dungeons in the Special Episode before facing Team AWD at the end. In order to access this cavern, the player must first go through the two side paths in the Illusion Rock Chamber before entering a storyline with Wigglytuff. While Team Charm is mulling over the situation with Wigglytuff, his Perfect Apple rolls through the seemingly solid wall in the middle of the two side paths, making Team Charm find out that they must go through the wall in order to find the treasure. The guardian of the Time Gear is Ditto.
When the ladies of Team Charm venture through Limestone Cavern and its' deeper part, the traps encountered here are the same as the quarry outside and the lasttwo dungeons, with the same percentage appearances. In the first floor, there are no traps to be found including Wonder Tiles. Starting from the 2nd floor, six can be encountered at a time, 7 on the third, and 8 on the fourth floor and beyond.