Cold, Cold Crevasse

Cold, Cold Crevasse is the name of a supposed sub-area in Super Mario 64. It is mentioned on a sign near the beginning of Cool, Cool Mountain that states "Warning! Cold, Cold Crevasse below!" despite there only being a slope and not a crack in the mountain. There are several reports of this area.

Snowy Wiggler
In some instances of Cold, Cold Crevasse, it will be an arena with a light blue or white Wiggler known as a Snowy Wiggler on it. When defeated, it will drop a star.

Platformer
In some instances of Cold, Cold Crevasse, the area will be an area the player must platform to the top of to collect a star.

Map Addition
In some instances of Cold, Cold Crevasse, the Cool, Cool Mountain map will be adapted to have a clone of the slope below the sign on the other side of the map. There will be surrounding land, and the map will change drastically.