Internal Sewer System

Internal Sewer System is an area in B3313.

Description
This area is a small subterranean location presumably under Peach's castle. It is divided into two floors, with the upper floor having a fenced pool of water, a ramp with a door at the top, and a painting in a side room. Also in this side room are two double doors.

Taking the left door in the recess in the wall will lead to the lower level. There are two single doors leading to the Plexal Basement and Floor 2B here, but otherwise there is nothing notable on this floor.

Origins
The area appears to be an original creation with various textures taken from the vanilla version of Super Mario 64.

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

Two-way

 * Familiar Floor(?): Enter the door at the top of the ramp in the upper level.
 * Plexal Hallway: Enter the double door across from the painting.
 * Hybrid Lobby: Enter the single door across from the door leading to the lower level.
 * Plexal Basement: Enter the double door in the hallway to the right of the painting on the upper level, or the single door to the left of the stairs in the lower level.
 * Floor 2B: Enter the door across from the stairs in the lower level.

Paintings

 * Blargg's Lava Realm(?): Enter the only painting in this area.