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Two M.E.G. operatives named █████ and ███ were sent to explore Level 1.



So.. I guess we just have to explore?

Yeah, and if something happens we have to report it.

Huh. Okay..

I suppose that we should go search for supplies.

Mhm, sure.

I really think that something dangerous just appear out of nowhere.

Come on, don't be scared!

I'm not necessarily scared.. I'm just... I don't know how to explain it.

Perhaps you can't explain it because there's literally nothing to worry about. Last time I checked, this had a "class 1" on the database. Also, it isn't called "The Habitable Zone" for nothing, right?

Forget it!

Actually, you were right. I'm surprised how we didn't encounter a single creature, entity, or whatever the M.E.G. calls it.

Well, they've sent a few people to exterminate them. I think they're doing this all over the whole Backrooms, not just this place.

WAIT!

What do you want now?

I think.. I see something.

I see something over there.

What is it?

Something is dripping from the walls.

Perhaps it's Almond Water?

What?

Oh, I forgot that you're still new to this place. It's just water.

Okay then.

So.. should we go near it?

Why wouldn't we?

Well.. I'm-

A loud thud is heard.


WHAT THE FUC-

RUN!

They escape.


This is what i was telling you about.

I know. I get it.

I've got an idea.

What?

How about we split up, then send messages through the app and document it that way? It's efficient, faster and just easier.

I guess we can do that. I mean, the operatives said that we should use the app anyway so I don't find a problem in it.

TO: ███
FROM: █████
SUBJECT: General.


Ay, I'm just testing this thingy out, this isn't important. I've seen a few creatures here and there, but nothing else. Seems like the M.E.G. really is doing the "extermination" well, huh? Anyways, please report anything if you see it. The operatives have notified me and said that we need to get atleast something new. So yeah, that's basically it. Please respond.
Cheers,
█████.

TO: █████
FROM: ███
SUBJECT: Response.


Oh, good to see you learning how this works. Anyways, no, nothing's happened. I just jsadfd. Anyways, see ya.
Cheers,
███.

TO: ███
FROM: █████
SUBJECT: General.


So, I've explored and found a weird area. I don't really know what this could mean. I've also used my phone to explore the database and this sure does look similar to, i think, Level 22? Sorry, i forget easily, hah. Also, i see random gibberish in your message, "jsadfd." What does this mean? I'm not familiar with code words that y'all use. Goodbye.


Cheers,
█████.

TO: █████
FROM: ███
SUBJECT: Response.


Srory ofr the iroge bad spleling. I guess I wan'st seriosu fjfg enuogh when tpyign. Aywansy I,m' not parcitulraily srue baout taht arae. It suer dose loko ikle Level 22. m'I curentrly explroing drakre regoins of teh wraehosue. Mesages me agani fi uyo cvbd find aynthing improtant ro worht bcx discusisng.


Cheers,
███.















Meglogo-black-and-white

M.E.G. Notice:
Entity 77, or Tunnelis Calldius, has been designated Impresario Class Priority due to the severe mental and physical hazards that it is able to cause. If you or a loved one have been attacked by an instance of Entity 77, please report your case to the Major Explorer Group as soon as possible.


> Entity 77: "Tunnelis Callidus"

Static55

Entity 77, colloquially referred to as "Tunnelis Callidus," are an assortment of life-threatening entities that inhabit The Backrooms. They predominantly reside throughout dimly lit, less illuminated regions of levels which are unable to sustain colonies of considerable size. They will make an effort to flee and resist attacking if they are approached by a group of more than three human beings.

Similarly to humans, Tunnelis Callidus are unable to live without food and water. They become more aggressive when not exposed to food and water for prolonged periods of time. These entities have over time adapted to the harsh conditions of The Backrooms and possess heightened senses, making them skilled at evading detection. Additionally, Tunnelis Callidus have developed an ability to naturally camouflage themselves within any black-and-white environments, blending seamlessly into the walls of darker rooms.

Tunnelis Callidus take the appearance of a type of flat worm that has an initial visual resemblance to that of a rather large lightbulb. They are covered in a sticky, colorless substance with an artificial smell of almond, which makes it possible for them to stick to ceilings, further allowing them to disguise themselves as light bulbs.


A Tunnelis Callidus will gradually begin to extrude branch-like objects from their body shortly after they are prepared to attack a particular individual, destroying the fake appearance of a lightbulb. These objects have been nicknamed the arms of Tunnelis Callidus for the reason that they are utilized for interaction with other objects, human beings, and entities. Once the Tunnelis Callidus' attempt of attack is finished, they will draw their "arms" back in.

The method of attack varies depending on the age of the Tunnelis Callidus. Adults will attack wanderers by biting them through a tiny, barely noticeable mouth. Young Tunnelis Callidus have a much more complicated way of attack. They will attempt to enter their target, utilizing many different methods. Due to their relatively small size, they prefer to enter through the selected individuals mouth.

When the Tunnelis Callidus has entered a specific person, they will attempt to approach and enter their brain/larynx. Once they have successfully entered, they will take control of the individuals thoughts and what they say. This effect also applies to typing on keyboards and phones, resulting in many misspellings. The more time a Tunnelis Callidus spends within ones body, the worse their condition becomes.

This process has been divided into 4 stages, each worse than the one before them.

Stage 1 Affected individual can still speak their desired language and doesn't say nonsensical sentences. Stage 1 starts right when a Tunnelis Callidus enters the brain.
Stage 2 Affected individual starts speaking few nonsensical words, they may forget small details of their life as well. Stage 2 starts an estimated two to three weeks after a Tunnelis Callidus has entered the brain.
Stage 3 Affected individual commonly speaks gibberish, rarely speaks normal words. They commonly forget about their basic needs (eating food, drinking water, exercising and et cetera). Stage 3 starts roughly 3 months after a Tunnelis Callidus enters the brain.
Stage 4 Affected individual frequently speaks gibberish. They have a slight chance of developing dementia which will lead them to forget family, friends along with the aforementioned basic needs. Stage 4 starts 5 months after a Tunnelis Callidus has entered the brain.


This list is not and cannot be completely accurate, as younger Tunnelis Callidus may not understand their purpose and will instead cause the wanderers that they have entered to act aggressively among other things.

The only currently known way to remove Entity 77 instance from one's head is to undergo a complex surgery which will require numerous medical professionals to be complete. The surgery itself consists of forceful removal of Entity 77's 'arms' from the affected parts of an individuals brain. This surgery is very difficult to do in most levels, and has only been successfully done 17 documented times. However, few Tunnelis Calidus may want to exit the human body and will leave by themselves, mostly through the mouth or nose.

Tunnelis Callidus reproduce similarly to flatworms found within The Frontrooms. Adult Tunnelis Callidus lay eggs, which then give birth to young Tunnelis Callidus. To ensure the survival of their children, these eggs are usually concealed in isolated, dark places. The juvenile Tunnelis Callidus then go through a maturation process during which they grow their branch-like arms and progressively acquire the ability to disguise themselves as light bulbs.

Because young Tunnelis Callidus have not yet developed their 'arms,' they pose no threat. Adult Tunnelis Callidus are highly protective of their young and will fiercely defend them if they perceive any threat, thus it is not recommended to approach them. User:Pexy0/monovoided.css

























A light can be seen in the distance.

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Tunnelis Callidus
Tom York (M.E.G.)
To: Johnny Greenwood (M.E.G.)
Cc: Gary (M.E.G.)


Hello Johnny,

I'll get straight to the point. We've made a few decently important of Entity 77, more specifically Tunnelis Callidus. (the worm things)

I got a friend who works for another organization and he's pretty experienced with entities, especially biology.

So, we caught a Tunnelis Callidus in Level 2 and we killed it via pouring some liquid pain, keep that in mind if ya ever encounter one.

Anyways, we've studied it's biology and we found a pretty concerning detail. Tunnelis Callidus have legs. LEGS. And with these legs they can MOVE. This might not seem important if you haven't ever encountered one of these guys but this is going to be crucial information. We always thought that they can just stick to walls and un-stick whenever they want to. But no, and this info is a game changer, seriously!

Take a second to imagine you and your group encounter one of them, and they send out all of their babies which sprint at you at a speed like no other, slowly climbing up your body. You can't do anything, except run, and in a second you won't be able to run either.

It's horrifying, right?!

I'd recommend sending this to the Major Explorer Group, Backrooms Colonists, or anyone for that matter. It's a shame to see that this entity is so underestimated, as it can and will cause serious problems, especially for the big groups. If ya don't take action, then Tunnelis Callidus will, and half of your employees will be gone...

Sorry for that.. Please keep us in contact, and if y'all find anything out then send it to me and the wider Major Explorer Group.

Also, if you want a photo of it, please private message me. If you don't know the difference, these emails can be seen by Backmails administrators, while private ones don't

Heres a photo of the good old Entity 77 in case you forgot what it is :)

Well,

Best Regards,
Tom York.

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Johnny Greenwood (M.E.G.) has replied to Tunnelis Callidus.

Re: Tunnelis Callidus
Johnny Greenwood (M.E.G.)
To: Tom York (M.E.G.)
Cc: Gary (M.E.G.)


Hello Tom,

Regarding Entity 77, I do not think that this is such of an importance to be reported to the wider Major Explorer Group. Their page editing system is very strict, and I'm sure that they wouldn't let you add it to Tunnelis Callidus' page anyway.

I do not know why you are so obbsessed with this particular entity. It holds barely importance, as it has only been discovered around a year ago.

Additionally, there are many reasons as to why this entity shouldn't be worried about as much as you say so. Let's compare Entity 77 to, Smilers, shall i say? Tunnelis Callidus will win in (mostly) every scenario, sure, but there's one thing that makes it much less dangerous than Smilers. It's their habitats. They only inhabit a few levels - 4 to 5, if i remember correctly. Smilers inhabit almost every level of the backrooms; they're probably the first entities that you'll encounter anyway. This is why barely anyone cares about this entity, and it's not too hard to avoid either.

About them being able to move, I don't see this is a potential issue. Sure, I haven't encountered an instance of Entity 77, but you don't need to be near something to know things about it. You've only said that this inhabits their children, not the adult ones. It's known that smaller Tunnelis Callidus have much lower intelligence, and some will not even attack people. In the rare case that they do attack someone, there's a really small chance that they'll enter the individuals body anyway. And if they do, one cough or sneeze can get them out. They may also leave by themselves, as they get bored pretty quickly.

I hope you understand this decision and why we haven't done anything requested by you. If you have more proof of Entity 77 being lethal, please send it to either me or other high-ranked Major Explorer Group members.

I'd recommend not sending anything to me as I currently have problems with Procul Lumina, so you should try this with Edd, Kolin, or Filip

Best Regards,
Johnny Greenwood.


From: Tom York (M.E.G.)
Sent: Tuesday, January 1, 2023, 5:17 P.M.
To: Johnny Greenwood (M.E.G.)
Cc: Gary (M.E.G.)
Subject: Tunnelis Callidus


Hello Johnny,

I'll get straight to the point. We've made a few decently important of Entity 77, more specifically Tunnelis Callidus. (the worm things)

I got a friend who works for another organization and he's pretty experienced with entities, especially biology.

So, we caught a Tunnelis Callidus in Level 2 and we killed it via pouring some liquid pain, keep that in mind if ya ever encounter one.

Anyways, we've studied it's biology and we found a pretty concerning detail. Tunnelis Callidus have legs. LEGS. And with these legs they can MOVE. This might not seem important if you haven't ever encountered one of these guys but this is going to be crucial information. We always thought that they can just stick to walls and un-stick whenever they want to. But no, and this info is a game changer, seriously!

Take a second to imagine you and your group encounter one of them, and they send out all of their babies which sprint at you at a speed like no other, slowly climbing up your body. You can't do anything, except run, and in a second you won't be able to run either.

It's horrifying, right?!

I'd recommend sending this to the Major Explorer Group, Backrooms Colonists, or anyone for that matter. It's a shame to see that this entity is so underestimated, as it can and will cause serious problems, especially for the big groups. If ya don't take action, then Tunnelis Callidus will, and half of your employees will be gone...

Sorry for that.. Please keep us in contact, and if y'all find anything out then send it to me and the wider Major Explorer Group.

Also, if you want a photo of it, please private message me. If you don't know the difference, these emails can be seen by Backmails administrators, while private ones don't

Heres a photo of the good old Entity 77 in case you forgot what it is :)

Well,

Best Regards,
Tom York.









It lures you to come closer.

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I woke up to yet another day in The Backrooms, this time a different environment from the one i traversed yesterday.The corridors, full of hissing pipes, were starting to become eerily hot. I looked out from my hiding spot and saw a faint glow in the distance, seemingly coming out of nowhere. It might've been an entity, thus I decided to back away just in case something attacks me. I felt as if the time was passing slower than usual; an hour felt like 30 minutes, and from that feeling I could really tell that my mental health was getting worse and worse as time passes.



However, what would life be without action? I decided to quickly pack my bags and open the door leading to a completely new arrangement of hallways, each yet to be explored by me. Staying counscious was my primary concern, as breathing within the uncomfortably hot maintenence was surely a difficult action.



I did not, and I still do not, possess a time-tracking device. Though, I felt that enough time had passed, based purely on my gut feeling. Because of that, I ultimately decided to finally go to sleep. I entered a small, but decently warm room, it surely wasn't the best place to sleep in, but anything could do, especially in The Backrooms.



My day began, or atleast i felt like it did. This time, I woke up in the same place that i slept in, though I do not know if that was a good thing or not. I quickly looked out of the door to prepare if any incoming danger was coming, and there sure were a few "entities" wandering around there. Risking it and exiting the space i found myself in wasn't a good option, so i quickly hid behind a few boxes which were conveniently placed in the right corner.



Suddenly, I heard something banging on the walls. It wasn't traditional banging, and it definitely wasn't the sound of a hand banging. I knew I was in for something, whether it was luck or trouble.


And then, the door opened.



I take a look at what's located on the other side of the room, and it was a light. A similar, if not identical, light to the one I encountered yesterday.


It seems that the coast is clear, and there's nothing in sight except the blindingly bright aura.


I decide to approach it.






























Entity 77 is not a typical murder monster. It torments one to death without the use of weapons, instead harming people by completely controlling everything they do, yet the affected individual can do nothing about it. When it enters a body, the organs will be excessively confused, being able to cause one to die immediately. Tunnelis Callidus will last in ones body until their soul is let free, when they are taken to their grave.













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Tom York (M.E.G.) has replied to Tunnelis Callidus.

Re: Tunnelis Callidus
Tom York (M.E.G.)
To: Johnny Greenwood (M.E.G.)
Cc: Gary (M.E.G.)


Fine. I understand why you didn't do this and why you think that this is unimportant.

I don't want this to end so easily, and I don't want this to end at all. I, or more specifically We, need to get to the bottom of this.

You know the articles outdated cause of this, and it surely won't help anyone trying to escape those critters.

Say, how about me, you, and some others meet up in Level 10, find a Tunnelis Callidus, and put a stop to them. We've been getting terrorized for far too long, and I can't wait to finally find their weak spot and make them go extinct.

Best Regards,
Tom York.



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Johnny Greenwood (M.E.G.) has replied to Tunnelis Callidus.

Re: Tunnelis Callidus
Johnny Greenwood (M.E.G.)
To: Tom York (M.E.G.)
Cc: Gary (M.E.G.)


Sure, however I cannot make the meeting as I have to document more things about Procul Lumina. One of our guys couldn't make it due to his mother dying, so out of respect the ones in power changed when we have to start the trip.

Feel free to send updates to me through these private message thingies. I'll get someone who is good at documenting this type of stuff when y'all finish whatever you are doing.

Best Regards,
Johnny Greenwood.




> Tom York (M.E.G.) has sent two voice logs. Play them?
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1130-2

















> Notice: This log was recorded while The Flicker was taking place, thus they could not properly see and did every action with increased caution. <

> The log begins with a door being opened by the three M.E.G. operatives that Tom York had asked to participate in the mission. They quickly climb to the barn's next floor, supposedly to escape any entities if they enter the building. They use the little amount of furniture that they have to make chairs for themselves. All four of them take a seat, and the mission fully begins. <

Operative York: And... I think... Yes! it's finally on! Alright, so, I'm sure you all know why I've gathered you here. Today marks the day that the, as I'd like to call it, "Tunnelis Callidus Extermination Project" starts.

Operative Selpath: (slightly chuckling)

Operative York: I'll get in contact with one of my buds who knows a lot more about the biology of entities, specifically the one we're experimenting on today, Tunnelis Callidus. So, I'll go down to the lower floor and call him while you all can stay here, okay?

All in one voice: Okay.

> Operative York, as he said, went down to the lowest floor of the barn where he phonecalled a friend of his that worked for another organisation.

The remaining Operatives attempt to entertain themselves in random ways, all until one breaks the silence. <

Operative O'Brian: How do... you feel about this?

Operative Bluelog: I don't really know. I'm more of a technician than anything, but I've always wanted to try things like this - they used to call me the "brave kid" in school, hah.

Operative Selpath: Yeah, same. Don't know much about this, but I'll try doing... something, at least.

> The 3 operatives small talk about things unrelated to the mission to cure their boredom while Operative York is still at the barn's lower point. Luckily, his phone call ended and he returned to the rest of the operatives. <

Operative York: Right, so, we'll have to head out of the barn and go to a place in the fields where we're gonna meet up with my friend.

Operative Bluelog: Alright.

> Operative Selpath carefully opens the door, and the others slowly walk out of the barn.

> They walk for around an hour, attempting to locate the spot at which the meet up would happen. <

Operative O'Brian: Hey.. Mind if we stopped at one of those barns nearby? Already took me quite a bit of walking to get here from Level 9... surely wasn't a pleasant time there...

Operative York: Sure.

> They approach the nearby barn. They open the creaking wooden door and enter the structure. <

Operative Bluelog: Looks like a nice place. Maybe we'll find something good here.

Operative Selpath: Hope so. Could really use some water.. Almond Water.

Operative O'Brian: Hey, look! I see a.. crate? It's over there. Might be something in it. I'll row through it.


> As Operative O'Brian investigates the crate, the others explore the barn. Suddenly, a noise similar to the one that a drop of water makes when it touches a surface can be heard. <


Operative Selpath: (whispering) You hear that?

Operative York: We are not alone. Stay quiet.

> They, with increased caution, scan the barn looking for the source of the sound. Something catches Operative Bluelogs attention - a strange object hanging on the ceiling. <

Operative Bluelog: (frozen) That's... it. We've found it, Tom. Well, you're kinda the leader of this, what should we do?

Operative York: Easy question, easy answer. Be alert, be careful, don't make sounds.

Operative Selpath: We can't afford to provoke it. Let's just.. uuhh.. back away.

Operative O'Brian: Yeah. If it senses aggression, it'll probably become hostile. Just back away.


> The Tunnelis Callidus started quickly twitching and slowly turned its body towards the operatives. <


Operative Bluelog: Uh oh.

Operative Selpath: What's it doing?

Operative York: I don't know, but I don't-


> Instead of attacking, the Tunnelis Callidus wrapped its arms around a pillar, uninterested in the operatives. Its body blended in with the barn's dark color. <


Operative O'Brian: Is it... ignoring us?

Operative York: I'd prefer not questioning it any longer. Let's get out of here.


> The operatives, while looking at the Tunnelis Callidus, slowly retreated. <


Operative Selpath: And-


> The Tunnelis Callidus starts approaching the operatives, slowly but surely. <


Operative York: It's... coming.

Operative Selpath: Yep. Uh..

Operative York: I think I'm just gonna drop this.

> The log abruptly ends at that point, likely due to Operative York dropping the recording device. <

> A new log starts, this time recorded by Operative Selpath. <

Operative Selpath: So. This mission was a really bad failure. A really really bad one. I can't even describe it. You could probably imagine what happened after the first recording ended, but I'll still tell you just in case.

I'll get to the point now. We went outside of the barn, and the Tunnelis Callidus started approaching. It wasn't fast, nor did we know much about its method of attack, so we shrugged it off and just walked away. But we did NOT know what we were in for at that moment, and I don't think anyone would.

The Tunnelis Callidus started approaching us faster and faster every step it took. Someone, err... I don't remember who, but one of us noticed and told us. And we realized that this shit could be dangerous, so we started running like our life depended on it, cause it surely did.

We all went in one way, but later, I turned around only to see that Bluelog was nowhere to be seen. That fucker abandoned us to die. And out of 3 of us, 2 of us really did die. Specifically York and Brian.

I was able to outrun the Tunnelis Callidus and the hundreds of their little babies running towards us, though the other two didn't. I'm not sure what happened to them, though in the moment i could only hear screams of agony. It was too late to save them, so i went into a nearby forest-like are and hid behind a thick tree. Luckily, after that, I didn't hear nor see any of the Tunnelis Callidus anymore. I suppose I'm one of the lucky few who were able to get away from Tunnelis Callidus without dying or them entering me.

What York warned you all about really was true. You desperately need to add more information in the Entity 77 page on The Database. It'll save hundreds of lives.

I don't know if I'll work for the Major Explorer Group ever again, or run away just like Bluelog, at least this time it isn't in a cowardly fashion.

To summarize it, Get The Fuck Away from any Tunnelis Callidus you see.

One last thing, to those who declined the invitation to participate in this mission, i surely don't blame you.


























































































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Johnny Greenwood (M.E.G.) has replied to Tunnelis Callidus.

Re: Tunnelis Callidus
Filip Selpath (M.E.G.)
To: Johnny Greenwood (M.E.G.)
Cc: Gary (M.E.G.)


I'm sure you know what I want you to do if you've listened to the logs I've sent you. Please, please do it. We cannot afford to lose much more people to this, and I'd estimate that we've already lost a couple hundred lives just cause of these entities, and he number is surely gonna go into the thousands by the time you all finally start figuring out how to exterminate Tunnelis Callidus.

Honestly, one notice, a single notice, is all that it takes to stop underestimating how much power these entities hold over the levels they inhabit.

Best Regards,
Filip Selpath.


... --- -- . - .... .. -. --. / -... .- -.. / .. ... / -... --- ..- - .----. / - --- / .... .- .--. .--. . -. / - --- / -- .


> Open Author Information
> Close Author Information

Main Author: UnderPM (Wrote pretty much everything).
Contributor: Mike (Coming up with ideas, help on the first paragraph).
CSS: Stormy (stolen from windows rewrite)
Wikitext: Skip Button & BackMail taken from Procul Lumina with permission.
Second Image (Silly Worm 1): Anglerfish (spam silly in the comments).
Third Image (Silly Worm 2): Generated with AI.
Ambience: SCP: Containment Breach.
Fun Fact: This page is meant to be as similar as possible to procul lumina without being a copy. It's a little challenge set up by me, mike, tom and char.

Similarities:

  • silly latin name
  • silly introduction
  • silly description
  • silly music refrence
  • silly emails
  • silly logs
  • silly contest submission
  • silly morse code (procul lumina has it in an audio, while tunnelis callidus has it in a text)