The Plexus

 is a location in the Maze.

Description
The Plexus is a large room located in the Maze. The room has two notable 'pumps' in the room that constantly pump up and down, making lots of noise. Throughout the entire room, there are rebar sticking up out of the ground that make loud noise when touched. There are two levels in the Plexus, an upper and lower level. The Plexus can be accessed through the Somniloquy (With Scaffolding) and Somniloquy (Without Scaffolding) on the upper level, the Barracks, Signal Relay, and the Nerve Center. However, without a Grappling Hook, a player will be unable to get to the highest level of the Nerve Center from the Plexus. The hanging lights are a solid surface and are climbable. A player can get atop them by leaping from the upper levels of the Plexus, though this is not advisable to escape the Shape as it can still beckon player at these spots.

There are 4 Red Doors in total, a hatch at the center of the room on the floor, one on each side of the upper level near the Somniloquys, and a hatch underneath the Instrument Console near Signal Relay.

When standing in the center, next to the hatch, music can be heard playing.

Name Fragments
Click on the picture for a larger view, directions to the location, and the image of the fragment itself.

Trivia

 * "Plexus" is an anatomical term for "A network or interwoven mass of nerves, blood vessels, or lymphatic vessels".