Cryptic Chasm

Dungeon Parts
In this dungeon, after Floor 30, there is a fake exit that says the following within 6 different slates. There are Unown stones that are on floors: 1, 5, 10, 15, 20, 25. It's recommended to pick them up to progress the dungeon.
 * 1) If this is where you ended then you took a false path.
 * 2) Below the center of obscurity lies the key.
 * 3) If you are unknown of origin, then that is all you need to know.
 * 4) By dawn, you must swim the seas. But by dusk, you must walk on land.
 * 5) An odd past awaits you.
 * 6) Ahead lies a creature of unimaginable power

Pokemon
''Pokemon in bold are recruitable. Please visit the Recruitable Pokemon page for more information.''
 * Woobat (3%, 15-40F)
 * Sigilyph (-2%, 30-40F)
 * Klink (1%, 40-50F)
 * Elgyem (-3%, 55-60F)

Mystery Eggs

 * Cacnea
 * Mawile
 * Sneasel
 * Sableye
 * Spoink
 * Gligar
 * Drifloon (30-40F)

Dungeon Objective
The final boss has a rare chance of dropping Golden Mask.

Rules

 * On floors 1, 5, 10, 15, 20, and 25, there will be stones that spell O-R-I-G-I-N respectively. You must have these stones to open a door on Floor 30.
 * There is a maze puzzle on Floor 15. On the bottom right, there is a small room that leads to keys needed to open sealed chambers on Floor 30 and 50. You must have Dig to dig up these keys.
 * Bring a water (Dawn/Day) or ground (Dusk/Night) type Pokémon. These Pokémon are needed to pass Floor 40.
 * Have the Engraved Tablet in your bag to open the final locked door on Floor 50.

Tips

 * Do not enter the regular stairs on floor 30F. There's a sealed room that can be unlocked on Floor 30 with one of the Enigmatic Keys and O-R-I-G-I-N Stones.
 * Have a water/ground Pokémon such as Barboach or Wooper for Floor 40 to progress.