Cavern Of The Metal Cap

Cavern of the Metal Cap is the cap switch course to unlock the Metal Cap. It is accessed in Hazy Maze Cave. It is a rectangular cave with water at the bottom that leads to the Castle Grounds waterfall. There is a star for collecting 8 red coins.

The Metal Parasite
A supposed enemy known as The Metal Parasite can appear in this level and function as an alternative to the Metal Cap.

Breaking The Crystals
In some personalized copies of Super Mario 64, there is a star for breaking several crystals in the level.

Crystal Cave of the Invincibility Cap
Crystal Cave of the Invincibility Cap is an anomalous version of Cavern of the Metal Cap that has more crystals and some minor map changes, as well as more common Breaking The Crystals manifestations. It is believed to be a beta version of Cavern of the Metal Cap that the AI edits and adds back into the game.