If you're talking about Hidden Highland and not Hidden Land, there's 8 floors. In Hidden Land (the dungeon before it), there's 15 floors. And after Hidden Highland you battle Dusknoir, so bring your Reviver Seeds.
48 floors
The Temporal Tower has 23 floors in "Pokémon Mystery Dungeon Explorers of Darkness."
20 floors
The Nightmare has 17 floors.
there are 15 floors to this dungeon and a sandstorm on floors 6,10 and 11
There is 20
19
48 floors
=20 Floors=
13 floors
20 floors
there are no floors........Uhhh.....There are 50 floors. :))