Lethal Cavern

Lethal Cavern is an area in B3313.

Description
The area is a huge lava lake made out of blue lava, with several smaller platforms and boxes sticking out of it, along with a ground area at the end of a linear platforming section, which has a hole in the wall.

Origins
The area's layout and textures seem to mainly be inspired by one of Greenio's videos.

The music is a remix of the underground theme from Super Mario Bros.

Leading here

 * Bowser's Castle: In the left side room, go through the hole in front of the painting with a Snifit on it.

Leading away

 * Checkerboard: Jump into the item box found in the ground area.
 * The Void: Enter the ominous hole in the wall.