Level -81

Level -81, commonly called "Drowned Knowledge, is the 81st negative level of The Backrooms.
== Description==
This Level appears at first glance to be a completely ordinary 21st century library with wooden and steel shelves supporting several hundred kilos of books. The walls are covered with plywood panels. The particularity of this level is that it is flooded, there are approximately 2 meters of water on the floor of this library. Many books have fallen off their shelves and are floating on the surface. These books are for the most part completely illegible because they have been damaged by humidity. However, with a bit of luck, you may come across books that contain more information about the level and are intact and are often found on top of shelves or in cabinets. These books can also be used for no-clipping on several levels, depending on the title of the book used.
 
This water is heavy and stagnant, seeping into every little nook and cranny, transforming the small alleys into underwater passages. Often, the only way to navigate this ocean of lost information is by using makeshift boats built from floating debris. The books and shelves are covered with aquatic flora of unknown nature. A few windows are found in this library, bringing light in addition to that from the neon lamps embedded in the plywood ceiling. Some of these windows are broken and can therefore be passed through; they may lead either to Level 188 or to an Environment class level.
There is another room beneath the "Main Hall," completely flooded, called The Archives. This room is somewhat more dangerous than the main hall because it houses several Smilers and is plunged into almost complete darkness, with only a few lanterns hanging on the walls. These lanterns have a rather incredible feature: their flame will never extinguish, so it is advisable to take one to navigate the darkness of the sub-level.
In the Archives Room, one can find chests and drawers containing some flasks filled with a liquid resembling Almond Water, but it is strongly advised not to drink it as it is, in most cases, contaminated by the Hydrolitis Plague. One can also find library maps on the shelves, which can be very important for finding one of the 5 exits of the level.
== Entities ==
This level is occupied by a few Smilers lurking in the archives room in the basement, but it is very rare to encounter them since this room is completely flooded. Of course, there is the Hydrolitis Plague, which is typical of aquatic levels like level 37. But another entity exclusive to this level swims in the depths of the moldy ocean. It is called by wanderers: Ghost Eel.
===Ghost Eel===
This entity is exclusive to this level; it appears as a bioluminescent, transparent creature with a ghostly aspect, possessing filaments on its body and seemingly no eyes or mouth, but its "tentacles" are very dangerous, if touched, they will inject an extremely deadly poison that can kill a human in less than 5 minutes if left untreated. Its size can vary, but some specimens can measure up to 2 meters long. Despite the lack of eyes on its head, the Ghost eel can navigate very well and can detect a wanderer from more than 20 meters away. It is present in small quantities in the library but in very large quantities in the Archives Room.
In a drawer in the Archives room, there is a vial with a label reading "Agent56b" containing a cure for the sting of the Ghost Eel. But you should not drink too much; otherwise it will have no effect.
==Colonies and Outposts==
No outposts or colonies have been found in this level. This is probably because the place is flooded.
==Entries and Exits==
===Entries=== 
*Finding a book titled "Knowledge Flooded" and then no-clipping into the library of Level 80 leads to this level.
*Finding a CD called "Knowledge Flooded" and then watching it in the theatre of level 40 has a chance of leading the wanderer here.
*Passing through a window on Level 188 leads here.
===Exits ===
*Finding an exit in the depths of the waters at level -81 can lead the wanderer to the ocean at level 7.
*No-clipping into the archives can transport the wanderer to level 118.
*Going through a window leads to Level 188.
*Wandering until the watercolour becomes clear can take you to level 333.
*No-clipping with a book named "White" can take you to level 996.
*No-clipping with a book named "Warm Color Madness" can take you to level 177.
*No-clipping with a book named "White Sublimity" can take you to the bottom of a pool in Level 37.
Category:Negative Levels
Category:Cluster -I
Category:Levels
Category:Unconfirmed Levels
Category:Class 3
Category:Neutral
Category:Aquatic