Level 3 is the 4th level in the Backrooms. The two photos on the right seem to be the only known photos taken in this level.
A photo of a tunnel in Level 3 taken by an anonymous user.
A photo of a tunnel in Level 3 taken by u/MugSkeletons.
An Image Taken By u/GarbDemon On Reddit (It Is Unknown What The Enity Is In The Photo, Tho It Could Be One Of The Black Entities, no im not racist)
Description
In Level 3, the rooms are smaller and tunnels are more claustrophobic than in lower levels. In this level it is easy to find random objects, some of which can be very valuable, such as lighters and weapons. Level 3 is also the level where the WiFi is the strongest.
This level is considered to be the most dangerous level of all, because it is the home to most beings. Hounds, Facelings, Insanities, female Deathmoths, Skin-Stealers, Dullers, Smilers, Clumps, and Bursters seem to inhabit this level. Pipes line the walls and ceilings of Level 3, which makes it easy to distinguish from the previous levels. It is strongly advised to head to the next level quickly. However, there are lots of useful objects lying around on Level 3, so it can be beneficial to stay and collect items if you're confident. This is also the only confirmed Level with Smiler Exterminator.
Colonies and Outposts
Due to a massive number of beings inhabiting this level, no confirmed colonies or outposts have formed. However, there have been rumors of a group consisting of rabid people that turned insane by the Backrooms.
Of course, these are just rumors and should be taken with a grain of salt, as there was no known evidence to support this.
Leaving Level 3
The only way to leave Level 3 is through elevators which often lead to Level 5 and rarely Level 4 and 534. You can also go back to Level 2.