Level -5

Level -5 is infinite in size, and comprises five unique biomes: the Petrified Forest, the Wooden Caverns, the Burning Forest, the Rotting Caverns, and the Firmament.
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|-| The Petrified Forest=
==The Petrified Forest==
The Petrified Forest resembles a dead forest, with constant cloud cover similar to an overcast day. The terrain is like that of The Frontrooms, with the soil layer of the level being composed of simple dirt, various hills, and a few mountains dotting the landscape. The day/night cycle on the level lasts for 2 hours, with 1 hour days and nights. During the day, the entities present on this level come out of the caverns. Each night, the cloud cover dissipates to reveal an empty sky, save for a moon similar to the one in The Frontrooms. This moon rapidly shifts through its cycles over the course of the night, at a rate of 1 stage per 10 minutes. It is theorized that the rapidly cycling moon and shifting light levels spook the entities underground. If a Negative Glitch occurs during the day, the sky will darken and it will begin to rain heavily, causing puddles to form on the surface of the level. The precipitation does not have a major effect on this part of the biome, however. If it occurs during night, the Negative Glitch only has its standard effects on a negative level.
The trees that make up the forest are composed of a gray, stony material, which has been called "stonewood." This stonewood, while made of 100% stone, still has some tree-like structure, such as rings and pores. Researchers believe that this level accelerates the life and decomposition cycles of plant life present. This is due to the rapid growth, death, and petrification that occurs if anything is planted in the soil of this level. It takes approximately 1 hour for the plant to reach its final state. 
Despite this transmutation, the trees still bear flowers and fruit, designated "gemblooms" and "gemfruit" respectively. The nectar, named "crystal nectar", produced by the flowers is incredibly sweet. However, it is also somewhat acidic, so consumption of the liquid is ill-advised. The nectar, as well as the shininess of the blooms, attract the local Death Moth population, who serve as pollinators on this level. Once pollinated, the gemblooms become gemfruit in a process similar to flowering plants in the Frontrooms, and these crystalline fruit are inedible and do not contain seeds. They are made of 100% mineral, and that mineral can be nearly any naturally occurring gemstone found in the Frontrooms. 
It is unknown how the forest grows, since the fruit have no seeds. The gemfruit’s structure matches that of the fruit typically produced by that species of tree, excluding the composition. On occasion, one may come across a statue built using stonewood, with gemfruit and gemblooms as decoration. These are produced by a particular colony on this level for an as of yet unknown reason. During the day in this biome, birds, resembling Frontrooms crows or ravens, circle over wanderers and call out loudly. When night comes, the birds seem to disappear. They never land and any attempts to harm or capture them have failed. 
==Entities==
===Death Moths ===
In this biome, the only entities present are Death Moths, who forage for crystal nectar during the day. They act as pollinators for this biome. 
|-| The Wooden Caverns= 
==The Wooden Caverns==
The Wooden Caverns is a set of large, expansive caves interwoven with stonewood root systems from the Petrified Forest, and coal root systems from the Burning Forest. There are accessible entrances that exist throughout the surface biomes of the level. It is accessible through large cave entrances of the surface of the level and comprises the half of cave systems on this level.  As wanderers descend, the layers of dirt transition into a wood-like material, which has been named "earthwood." Earthwood behaves like a typical Frontrooms hardwood, except it is immune to flame, does not tend to absorb liquids, and does not rot. It is the main material that all of the caves on this level are made out of. Another strange material in the section of the level is a taffy-like material named "calorite". Calorite is soft, edible, and has a high protein content, similar to a protein bar. It has the coloration of a lightly toasted marshmallow, is located in ore-like deposits in the cave walls. It can be harvested by hand, but can be harvested faster with tools.
The other major quirk of this biome is the presence of large pools of liquid throughout the cave. These pools of liquid can be any liquid native to the Backrooms as well as some liquids shared between the Frontrooms and Backrooms. Anything from Almond Water to Liquid Pain can be found in these pools, and they are relatively pure and uncontaminated. As such, they are about as safe to drink as expected. Interestingly, deep down within the caverns, there are cracks in the cave walls which slowly leak small quantities of liquid Corruptionite into the surrounding environment, which often leak back into other empty cracks in the cave walls. It is unknown where this particular material is sourced from or where it goes, but this is the only source of Corruptionite in the level, as it does not appear in the form of large pools like all other liquids. It is strange for this material associated with the most unstable levels of the Backrooms to appear in this level that appears to be quite stable, but is theorized that it happens to be present on this level due to the anomalous properties present in [REDACTED]. When it rains on the surface, the Wooden Caverns flood completely, sealing off the entrances with large pools of liquid. This liquid is a mixture of the rainwater and all the other liquids of the Wooden Caverns. This mixture is highly toxic due to many of its constituent parts being so, such as Liquid Pain or Cashew Water. It is advised to evacuate from the underground as rapidly as possible if rain is detected or rushing water is heard. During the night, Death Moths roost on the cave ceilings near entrances during the night, and are territorial. As such, entering the caves at night is ill-advised. 
==Wooden Cavern Entities==
===Death Moths===
Death Moths roost in the entrances to the Wooden Caverns at night, and forage for crystal nectar during the day. They are highly territorial and will attack wanderers who pass through their territory at night. 
===Hydrolitis Plague===
In the Wooden Caverns, pools of water containing the Hydrolitis Plague can be found.
|-| The Burning Forest=
==The Burning Forest==
The Burning Forest is a second forest-like biome found on the surface of this level. However, unlike the Petrified Forest, it is quite dangerous. This is because the forest is often on fire, as the name suggests. The Burning Forest is made up of trees composed of 100% anthracite coal, which is what causes the trees to burn so violently and for so long. The entities in this biome are often the sources of these fires, but they can also be caused by lightning, which comes from the thunderstorms that occur in this biome during the Negative Glitch. The rain from these storms is unnaturally hot, and can cause moderate burns on exposed skin. 
During the day, the level is very hot and humid, and can cause heatstroke in unprepared wanderers. Bringing ice packs or other cooling methods is recommended for traversing this biome. This biome's entities are quite active during the day, and the sky is filled with a fiery red haze. Smoke inhalation is also a significant risk for wanderers, so gas masks or an equivalent should be used in this biome as well. However, during the night, this biome exhibits an interesting property: the flames burn cold, reaching temperatures as low as -270°C. This means that instead of outputting heat, the fires will absorb heat rather efficiently. The fires still otherwise behave as expected, spreading and burning the same. Interestingly, objects that would be cold during the day seem to provide warmth to wanderers at night, and can be used to combat the cold and dry ambient environment present at night. The extent of this effect still requires further testing, but seemingly extends to most heat sources or sinks in this biome when night falls. The haze in the sky is no longer a deep red, instead taking on an dark, icy blue. Smoke inhalation still proves to be a danger at night, so do not feel safe merely because the temperature has decreased. 
Similarly to the stonewood trees found in the Petrified forest, the coal trees develop tree-like structures like rings. They also have a similar life cycle, when they grow, die, and transform into their respective material rapidly. However, the coal trees do not petrify, and instead coalify. The coal trees also have a interesting reproduction method. When mature, the trees will begin to produce pinecones. As the tree dies and undergoes coalification, the pinecones undergo a modified coalification process as well, while remaining attached to the tree. Fully matured specimens of these pinecones have been named "Pinecoals". Pinecoals are made up of an outer shell of coal, with an inner core of gunpowder, interestingly reminiscent of a grenade. They also function like one, exploding on impact with the ground when dropped by the coal trees. The stimulus for them to fall is the presence of fire, both during the day and the night. The explosion launches pellet-like seeds embedded in the coal shell long distances, which helps to spread them around for a greater expansion of the forest. Pinecoals only explode during the day however, as at night they fall to the ground without doing so. The trigger for the explosion is not only hitting the ground, but that it also must be daytime. This has the interesting effect of causing a large bang to shake the Burning Forest every morning, as all of the Pinecoals explode. It is advised to avoid the area around fallen cones during night due to their explosive properties during the day. Shrapnel is also a concern.
==Burning Forest Entities==
===Lighters===
Lighters can be found in this biome. During the day, they emit heat, often cause forest fires. During the night they absorb heat instead, but still cause fires due to the anomalous properties of the level. 
===Carbonations===
There is a significant population of Carbonations due to the large amount of carbon present in this biome, both in the coal trees and in the air.
Both types of entities dislike leaving the Burning Forest biome because there is no flammable material on the rest of the level.
|-| The Rotting Caverns=
==The Rotting Caverns==
The Rotting Caverns biome comprises the second part of the infinitely large and deep cave system on this level. It is made of the same wood as the Wooden Caverns, that being earthwood. Similarly, root systems from the forest biomes can also be found. However, this biome makes earthwood loose one of its anomalous properties; it can now rot and decay. This biome is taken over by a fungal rot, which appears to be an entity in and of itself. The air here is thick, humid, and heavy with the scent of death, with a gentle yet uncomfortable warmth to it. It is unadvised to remain in this biome for extended periods of time, as the air here is saturated with bacteria and viruses. If one desired to be here for any decent amount of time without getting sick, masks are necessary. During a Negative Glitch, the Rotting Caverns are flooded in a similar way to the Wooden Caverns. Since they are connected through underground tunnels, the same hazardous mixture of liquids will submerge the Rotting Caverns, making them uninhabitable. Unfortunately, The Rot is resistant to this mixture and can survive the flooding.
==Rotting Cavern Entities==
The Rotting Cavern only houses one entity.
===The Rot:===
The Rot is the name given to the fungus-like entity that has taken complete control over the Rotting Caverns. It is a fungal hive mind that uses extensions of its body in the form of oversized fungal insects to patrol its territory. Through its mycelial network, it can detect everyone and everything in its domain, and it has only one motive: to feed. It also uses the mycelial network to communicate with the insects. Wanderers who enter these caverns can expect to be attacked by the aforementioned fungal insects. The insects are quite vulnerable to bladed weapons and guns, as their thin hides can be easily pierced. However, this same weakness offers a resistance to blunt-force trauma, making hand-to-hand nearly useless. They are also resistant to acid, which allows for them to capture Death Moths that wander into the wrong cave entrance. When an insect has subdued and killed a victim, they will bundle them in a fungal thread and leave the corpse to be consumed by the walls over the course of a few weeks. If wanderers come across humanoid lumps on the floor, they should know that it is the final resting place of another wanderer. 
|-| The Firmament=
==The Firmament==
The Firmament is the space above the cloud layer on this level. It is unknown how far upwards it goes or if anything can survive there. This is because of a constant barrage of high-energy ionizing radiation pouring down from above. This causes significant radiation damage to the bodies of non-radiation resistant lifeforms, and causes technology to fail. As such, this section of the level has received minimal exploration, and it is not currently known if anything else exists past it. Luckily, the radiation appears to stop at the height of the clouds for reasons yet unknown.
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==Colonies and Outposts==
===The Carvers ===
The Carvers are a mysterious and elusive group, working in the shadows. They appear humanoid, but any further examination has been prevented by their skittish nature and complete concealment of any exposed skin. They are only known of from eyewitness accounts and their statues which can be found throughout the level. These statues are made of stonewood, gemblooms, and gemfruit. However, their purpose outside of acting as decorations is unknown.
===MEG Research Base Gaea=== 
This MEG base focuses on the research of the various anomalous material present on the level and their applications. It is staffed by a team of five MEG scientists and two MEG soldiers, and is open to provide support to any wanderers that locate the base, which is situated in the Petrified Forest. They have enough supplies to stay in the base for five Frontrooms years, and maintain regular communications with MEG command.
==Entrances and Exits==
All of the biomes present on this level are interconnected and can lead to each other. 
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|-| The Petrified Forest=
===Entrances=== 
* Being left for dead by Amara (or another of his kind) in the Toundra abandonnée au crépuscule of Level -222 has a chance to anomalously transport wanderers here.
* Successfully falling through Winter's Iridescence on Level -40 has a chance to lead here.
* Touching a plank of floating, glitchy-looking wood on Level -4 leads here.
===Exits=== 
* Smashing a red gemfruit on the ground causes wanderers to be forcibly no-clipped into Level -250.
* Tripping and no-clipping into a stonewood tree while it is raining leads to Level -422.
|-| The Wooden Caverns= 
===Entrances=== 
* Taking the white slide on Level -37 anomalously transports wanderers here.
* Reaching the end of the Dreadxit in Level 455 has the possibility of sending wanderers here.
* Medieval-style doors labeled "-5" found on Level -1000 lead to this biome.
===Exits=== 
* No-clipping into a vein of calorite leads to Level 117.
* No-clipping into any surface made of earthwood connects to the mountainous zones of Level -44.
* Jumping onto a pool of ice leads to Level 394. 
|-| The Burning Forest=
===Entrances=== 
*Falling into plasma pits on Level 963 will lead here.
*Reaching the end of the Dreadxit in Level 455 has the possibility of sending wanderers here.
* No-clipping into trees on Level 241 leads here. Using this entrance is unadvised due to the properties of the trees on that level.
* No-clipping though any tree that is at most 2m away from the Chromyl River on Level -250 transports wanderers here. This is unadvised, since it will result in an irreversible loss of grey matter and severe impairment to the rest of the body.
* Requesting and taking a train to this level on Level 233 at the Neon Nexus brings you here. 
===Exits=== 
* Succumbing to heatstroke in this biome causes wanderers to wake up in Level 82.
* Rarely, at the dusk or dawn each day, the flames may anomalously lessen. During this brief period, one may encounter a dilapidated refinery, and entering it leads to Level -300
* Setting oneself on fire and putting it out with water has a small chance for wanderers to fall unconscious and wake up on Level -110.
|-| The Rotting Caverns=
===Entrances=== 
* Finding the one non-sentient pylon with color (25 miles from the entrance) on Level -250 and no-clipping into it leads here.
===Exits=== 
* No-clipping anywhere in the Rotting Caverns leads to Level -6.
|-| The Firmament=
===Entrances=== 
One can reach The Firmament by ascending past the cloud layer of this level. As of yet, no entrances to this biome from outside the level have been reported. This does not mean that they cannot exist.
===Exits=== 
Due to the conditions present, even if there are exits, they cannot be used by wanderers.
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Category:Dangerous
Category:M.E.G
Category:Unconfirmed Levels
Category:Cluster -I
Category:Neutral
Category:Safe
Category:Levels
Category:Negative Levels
Category:Negative Levels
Category:Unconfirmed Levels
Category:Safe
Category:Negative Levels
Category:Unconfirmed Levels
Category:Forest