Hazy Maze Cave

Hazy Maze Cave is a large cave, with many unique assets. The entrance is a pool of metal liquid which can be found in the Castle Basement with no additional stars needed. The entrance to the Cavern of the Metal Cap area can be found here. The stage has a confusing design at times, so there are maps placed on the walls to help figure out where to go.

Geography
Hazy Maze Cave is a rather large cavern with many rooms. Notable rooms are the underground lake, a room with a moving platform and red coins, and a toxic maze. The toxic maze has poisonous gas, which requires use of the Metal Cap to breathe in safely.

Missions

 * 1) SWIMMING BEAST IN THE CAVERN
 * 2) ELEVATE FOR 8 RED COINS
 * 3) METAL-HEAD MARIO CAN MOVE!
 * 4) NAVIGATING THE TOXIC MAZE
 * 5) A-MAZE-ING EMERGENCY EXIT
 * 6) WATCH FOR ROLLING ROCKS

The Metal Parasite
Main article: The Metal Parasite

The Metal Parasite is a blob of metal that can be sometimes found here. Anything that touches it gains powers similar to Metal Mario's.

Horror Dungeon
"Horror Dungeon" is Hazy Maze Cave's internal name, as seen in the unused level select. This name is somewhat unusual, since Hazy Maze Cave is not horror-themed and does not include Boos anywhere of the sort. It is possible that Hazy Maze Cave was more horror themed earlier in development, and this name is just a leftover.

Sewage Conspiracy
The entrance to Hazy Maze Cave is laced with pipes across the walls leading some to believe that the room is related to the castle's sewer system. Others jokingly speculate that Hazy Maze Cave is also the castle's very own sceptic system due to the existence of poisonous gas being flatulence and the rolling boulders being large lumps of feces.

Salty, Salty, Shore
Main article: Salty, Salty, Shore

Salty, Salty, Shore is a level that occasionally replaces Hazy Maze Cave. It is a beach-like area with caverns, mist, and Dorrie, causing many to believe it is an early HMC, or was otherwise reworked into HMC.

Mother Dorrie
Main article: Mother Dorrie

Mother Dorrie is an entity which can be sometimes found in the same area as Dorrie. It resembles Dorrie but is larger and more intimidating.

Siren of Hazy Maze Cave
Main Article: Siren of Hazy Maze Cave

The Siren of Hazy Maze Cave is an entity that can be found in Hazy Maze Cave, however it usually is only represented by small events throughout the level.

Deeper Cavern
The Deeper Cavern is an anomalous area of Hazy Maze Cave found by falling into one of the bottomless pits in the level. This area has been described as a long maze-like cavern covered in vines, with unique bioluminescent spore objects lighting up the area covering the vines, and spider enemies similar to the Creepy Crawlies from the Pit of Peril level. Stars are most commonly obtained by defeating a larger spider mini-boss fight, or simply reaching the end of the maze.

Deep, Deep Void
Deep, Deep Void is an anomalous secret level found in Hazy Maze Cave by falling into a bottomless pit, similarly to the Deeper Cavern. It has been described as a dark and linear cavern very similar to Cavern of the Metal Cap, with several inconsistent assets, such as a lake or Hazy Maze Cave's rolling rocks at one part. It generally contains it's own set of missions separate from HMC's, though never enough to be considered a full course.

The Metallic Monster
There have been reports of an anomalous entity similar to the Wario Apparition called the Metallic Monster that will appear in an area of Hazy Maze Cave or similar areas and will chase the player. It reportedly has the appearance of a disembodied head with a metallic texture on it, hence the name. It can reportedly appear in a unique level called Shiny Metal Ravine, though these claims are relatively unsubstantiated, and the only thing mentioned to appear in the level is the Metallic Monster. Notably, similar to that of the Metal Cap theme can reportedly be heard when being chased by the Metallic Monster.