In the underground dungeon (its proper name is Magma Cavern) there are 23 floors, then a mid point to save at, then another three. But on the bottom three you only have to go through one because on the 2nd floor there is a cut-scene then on the third floor is the boss!
On mystery dungeon in northern range, there is 25 floors and that's when you meet latios.=)
miracle sea all floors
in sky, 25 floors
11 floors
99
48 floors
Crystal Cave has 12 floors in Pokemon Mystery Dungeon: Explorers of Darkness.
A dungeon is a cave on pokemon mystery dungeon. It is a level with a series of floors/rooms and the object is to get to the end of the dungeon.
There are 19 floors in the Landslide Cave dungeon in Pokemon Mystery Dungeon: Explorers of Darkness. The dungeon is known for its rocky terrain and challenging battles with ground-type Pokemon.
30 floors
24 floors
there is thirty floors
there are 20 floors.
40
The Nightmare has 17 floors.
50 floors
there are 15 floors to this dungeon and a sandstorm on floors 6,10 and 11