Sauna Cavern

If you are looking for Sauna Cavern Depths, go here.

Sauna Cavern, also called Sauna or SC by players, is a dungeon containing HM Rock Smash. It has a mix of different Pokémon types, but becomes more unified as the player progresses. The large range of types makes it challenging for lower leveled players to finish this dungeon. The dungeon changes scenery 3 times, with different Pokémon types introduced at each change. However, the stages remain at first and second evolutions consistently.

This dungeon has 23 floors and a boss.

The Pokémon in this dungeon are mainly in the level range of 26-30.

Scenery
The scenery in this dungeon changes 3 times, with the difficulty of each section increasing as the player descends into the Cavern.

Low Floors
The lowest floors include mainly first stage evolutions and have multiple types apparent - Ice, Fighting, and Poison, most notably. This scenery set has a sand-like ground with grey walls. Water spawns here in either common or uncommon amounts. The weather here is commonly foggy or cloudy. This lasts from floor 1 to floor 5.

Mid-Floors
The Mid-Floors become darker and more rich in minerals. With this, the ground goes from being sandy in color to more dark and the fog becomes thicker. The water becomes more common and there is a special effect added to the water; when you step on it, you will become burned, unless you have something like Water Veil or Safeguard to protect from statuses. This lasts from floor 8 to floor 14. A Secret Room can be found on floor 14.

Lower-Upper Floors
The Lower-Upper Floors change from the previous scenery set, although the walls and floor stay the same; the only difference is that water no longer spawns. The rooms also become smaller and the Pokémon in the next set of scenery are shown. This lasts for floor 15. A Secret Room can also be found on this floor.

Upper Floors
The Upper Floors change drastically from the previous floors. The ground goes from being dark in color to sandy-like again and the walls turn lighter in color. Instead of water, there is lava, which becomes much more common than the water on previous floors. This lasts from floors 16 to 23.

Upper Floors
* Only attacks in self-defense

Items
The items in this dungeon are like the ones found in most dungeons. Since it is a random dungeon, it can possibly spawn Heart Scales and Big Mushrooms, invisible on the walls and floor respectively. It also includes the basic set of items necessary for exploring. The list is as follows:
 * Apple
 * Ether
 * Blast Seed
 * Herbal Tea
 * Grimy Food
 * Gravelerock (stacks of 1-3)
 * Iron Thorn (stacks of 2-4, B15F+)
 * TM Rock Tomb (B1F+)
 * TM Acrobatics (B8F+)
 * TM Facade
 * TM Flash
 * TM Psych Up
 * TM Solarbeam (Invisible-Ground)
 * Water Stone (In Water, B8F+)
 * Fire Stone (In Lava)
 * Oran Berry
 * Pecha Berry
 * Poké (Ground, stacks of 5-71; water, stacks of 16-68; in walls, stacks of 82)
 * Power Band
 * Def. Scarf
 * Pecha Scarf
 * Rawst Scarf
 * Smoke Ball
 * Slumber Orb
 * Drought Orb
 * Spurn Orb
 * Warp Orb
 * Foe-Seal Orb
 * Lagging Tail (Onix Drop)

Mystery Eggs

 * Torkoal
 * Slugma (Lava)

Secret Room
This dungeon also offers a Secret Room. However, the Secret Room only appears on floors 14 and 15, so little about it is known. This Secret Room gives 2 Deluxe Boxes. The items that are found in the boxes are as follows:
 * Lum Berry
 * TM Payback

Dungeon Objective
The objective of this dungeon is to progress through the Cavern and defeat the boss, a Rhyhorn. The player can also access Sauna Cavern Depths from this point.

This dungeon has the item HM Rock Smash that is needed to access more of the dungeons in PMU.

Trivia

 * This is the only dungeon that a secret room only spawns for 2 floors.
 * This dungeon is the only one with 23 floors.