It has 25 floors, the 25th being the treasure room.
25 foors
Crystal Cave has 12 floors in Pokemon Mystery Dungeon: Explorers of Darkness.
30 floors
There are 20 floors.
It has 4678 floors.
there are no floors, just one, you can only evolve pokemon there
The Nightmare has 17 floors.
there are no floors........Uhhh.....There are 50 floors. :))
Bottomless Sea has 50 floors.
=20 Floors=
theres 19 floors and ovcourse the summit
48 floors