Team members universally report (A) going 
through an event which had such a drastic 
mental effect that it killed them (but which they 
cannot recall the details of), (B) recalling living 
entities inside SCP-3591, some potentially 
dangerous, (C) having spent approximately a 
week inside SCP-3591 (despite only 23 hours 
having passed outside) and (D) feeling a 
strong personal drive to revisit SCP-3591, Blue 
citing anomalous ritualistic reasons as 
justification for the request being granted. 


After mandatory three-month leave, request for 
final mission granted. 


SCP-3591 "Head" Test 
View Record 


Pre-Mission Report: Same four-person team 
as prior missions. Per request from Blue, test 
aimed to explore known entrance into 
SCP-3591's apparent head. 


As with prior mission, communication with 
team was largely impossible. Equipment 
barely functioned at all in the SCP-3591 area. 
Only one part of the mission was successfully 
recorded, and is transcribed below. 


[BEGIN LOG] 


Video only. Team has just walked through an 
entry-way into a network of small "rooms". 
Nothing can be seen through the entry-way on 
any feed except distortion and static. 


Rea's feed shows many organ-like chambers, 
much redder with blood than other areas of 
SCP-3591. Green's feed shows an ornate 
medieval castle hall with non-Euclidean 
physically impossible geometries. Gold's feed 
shows something like a spaceship command 
deck, complete with empty captain's chair. 
Blue's feed shows a grove of trees in a snowy 
forest, many fallen to the ground, focusing on 
whorls of knotted wood / a spiraling glass path 
over a black void, with the end off-camera / 
rooms full of devices of multi-colored crystal. 


All feeds show numerous examples of alien 
devices with unknown function. While many of 
the appearances are are strange and functions 
not apparent, they all appear consistent and 
relatively mundane compared to SCP-3591 
onscreen elements. 


As the team proceeds, they encounter living 
organisms. None seem hostile. None attempt 
to communicate with the team. Team seems 
be used to encountering them at this stage. 
Organisms appear consistent across all feeds. 


Blue suddenly seems surprised, and 
gesticulates at her team members. She leads 
team members to a side "room" with a table- 
like structure on it. 


A living human being is comatose underneath 
the table. Human is naked, and has no 
significant identifying features. 


After a short discussion, the team lifts and 
carries the human out of the area. Feed lost. 


Three days pass. Feed resumes. Team 
members Green, Red, and Gold emerge from 
SCP-3591, still carrying the comatose human. 
Red is severely injured, exhibiting slashing 
cuts across her torso and left arm. Team 
members are taken in, decontaminated, and 
given medical attention. 


[END LOG] 


Post-Mission Report: As before, team 
members recall little, despite bringing many 
samples. Red claimed that Blue sacrificed her 
life to save Red, even though Red was 
"supposed to die". Team members remember 
almost nothing else, including the portion 
recorded on the feed, except the fact of having 
recovered a comatose human, and the death 
of Blue. 


After one month and three days passed, team 
member Blue emerged from SCP-3591, with 
severe but healed injuries similar to Red's. 
Blue similarly remembered little, but claims to 
have [DATA EXPUNGED]. (See Interviews.) 


SCP-3591 Extra-Universal Investigation: 
Open File 


By order of 05-10, SCP-1985 was temporarily assigned 
to gather information about SCP-3591's risk and context. 


Note: For those of you who do not have 
access to SCP-1985's file: SCP-1985 is able 
to travel to other universes that are undergoing 
"doomsday" and/or "restructuring" scenarios 
related to a specific item. Any universe 


SCP-1985 traveled to was, in theory, going 
through an apocalypse caused by or related to 
SCP-3591. 


— Site-19 Director Tilda Moose 


Report summaries of SCP-1985 excursions investigating 
SCP-3591 follow. 


¢ Earth nearly identical to our own, with SCP-3591 
present (dead, inactive). Ongoing apocalypse 
cannot be precisely identified. Low-level reality 
shifts present. Effects not identified. 


© Five variants discovered. 


Earth nearly identical to our own, but stripped of 
human life through an apparent mass death event. 
Presence of SCP-3591 verified (dead, inactive). 
Exact connection could not be verified. 


O Seven variants discovered. 


Earth nearly identical to our own, until 7 to 23 
months prior to SCP-1985 arrival. Recovered 
Foundation data caches indicate sudden 
widespread devastation by invisible, unknown 
forces. Connection to SCP-3591 theorized due to 
similar anomaly analysis readings, but SCP-3591 
remains dead and apparently inactive. 


© Fifteen variants discovered. 


Earth is broken in half, and uninhabitable. Most of 
atmosphere gone. Cause not identified. Exact 
strike location varies. Presence of SCP-3591 
verified (dead, inactive). In two variants, humans 
survive in space station structures, but drive 
SCP-1985 off with advanced weaponry when 
contact is attempted. 


© Nineteen variants discovered. 


¢ Total shift in nature of reality. Incomprehensible to 
SCP-1985's senses. No way to detect presence or 
absence of SCP-3591. 


© Thirty-three variants discovered. 


Earth has gone through an apocalypse of unclear 
nature. 70-90% of human population dead, rest in 
hiding. Minor reality shifts are common. Massive 
indistinct entities are sighted striding through 
deserted towns and cities. Some appear 
quadrupedal, some appear humanoid, often many- 
armed. SCP-1985 is unable to get close to them. 
Connection to SCP-3591 possible but unverified. 
Presence of SCP-3591 (dead, inactive) verified. 
Typically, chemical makeup of soil and 
atmosphere is altered. Many large areas 
uninhabitable. In several variants, a poisonous 
mist-like gas covers 80% of the Earth's surface. 


© Thirty-seven variants discovered. 


¢ Unique variant: Earth has been rendered 
uninhabitable due to massive reality shifts. 
SCP-1985's inbuilt recording systems cannot 
analyze most of the changes, but unlike most 
similar excursions, human survival is still possible 
for a limited time. Human survivors have traveled 
to the anomalous location called the Wanderers' 
Library, leaving Ways open to allow remaining 
survivors to follow. SCP-1985 is able to enter an 
outer ring of the Library and converses with 
survivors and Library inhabitants. 


© Presence of SCP-3591 verified (dead, 
inactive). 

© SCP-3591 is referred to by survivors 
variously as "a deserter" and/or "killed in 
action" in relation to an unexplained war. 
Inquiries are meant with claims that the war 
should not be discussed and has nothing to 


do with any humans. 

© Notably, Library inhabitants also claim that 
SCP-3591 is a single, consistent entity 
across all realities in which it appears. This 
is consistent with SCP-3591's identical 
status in every excursion so far. 


¢ Unique variant: Apocalypse not apparent or 
identified. Identical to present Earth except for 
presence of unusually active Foundation 
personnel, who immediately contact SCP-1985 
upon arrival. Foundation personnel unusually 
angry and disturbed to encounter SCP-1985, and 
disbelieve explanation of SCP-3591 investigation. 
Foundation personnel repeatedly refer to 
themselves as 'mainline reality’, questioning how 
SCP-1985 could have accessed ‘mainline reality’ 
without assistance from a non-Foundation 
anomalous source. They refer to SCP-1985 asa 
"mirror" instance (possible relevance to 
[REDACTED]). Foundation personnel demand that 
SCP-1985 remand herself to their custody to be 
identified so that the anomalous occurrence may 
be resolved. SCP-1985 instead returns to home 
base, after verifying presence of SCP-3591 (dead, 
inactive). Local Foundation has built a massive 
titanium-laced concrete bunker over SCP-3591 as 
additional containment procedures. 


SCP-3591 Interviews: 
Open File 
SECURITY CLEARANCE ACCEPTED 


STATEMENT FROM AGENT "BLUE" RE: SCP-3591 
EXPLORATORY TESTS (EXCERPT): 


Excerpt from Blue's report after return from SCP-3591. 
Following sections include information expunged from 
main SCP-3591 article. 


Current procedures may not apply. 


Interview-466-12 [LEVEL-3 ACCESS REQUIRED] 


POST-INCIDENT 
INTERVIEW )nT-466-12 


Interview Date: 08/04/2014 

Interview Time: 06:48 

Site/Location: Research Site-45 
Interviewer/s: Internal Investigator Rubén 
Foster 

Interviewee/s: Medical Director Dr. Andrea 
ltzkowitz 


Agent Foster: All right... we are recording 
now. Have a seat, doctor. 


Dr. Itzkowitz: How long will this take? 


Agent Foster: Depends. Is this your first time 
in one of these? 


Dr. Itzkowitz: No. There was one other time. 


Agent Foster: Well, let's get started. (papers 
shuffling) You were... according to the case 
file... the one who authorized the autopsy, 
correct? 


Dr. Itzkowitz: | did. 


Agent Foster: Would you like to elaborate a 
bit more, doctor... for the record. 


Dr. Itzkowitz: Right. Well, we were certain that 
it died and we waited for two days as per the 
protocols for expired anomalous entities in 
containment. | ordered the autopsy to be 
performed before the body decayed any 


...well, | know Red thinks it's God. | see what 
she means. | don't know that I'd go that far. | 

don't think this thing has ever been on Earth 

before. 


That's the thing. It's also a machine. And a 
place. And a structure. We primarily see the 
humanoid image because it's the most familiar 
to us, the most native impression. A machine- 
based intelligence would probably see the 
machine... At least, that's my theory, but I'm 
pretty solid on it. 


Yes, it's dead. But... | don't think it dies in the 
same way we do. It leaves an echo. An 
imprint. No — that's not what attacked me. I'll 
get to that. But the echo was there, and | ... 
encountered it. Communicated with it, ina 
way. Like | said, | can't really recall most of it, 
and | can barely describe what | do recall. 


Do | know what killed it? Something else like it. 
If you think it's a god... then another god. 


But | gotta say, I'm a pagan member of 
Sigma-3. | know all about gods. This thing... 
this thing is beyond gods. And | don't say that 


lightly. 


What do | think it is? | think it's a sign of things 
to come. Things we don't understand. And if 
what | experienced tell us anything at all, it 
tells us we'd better figure out what we're going 
to do, or our reaction is going to be very, very, 
very stupid. 


INTERVIEW SUMMARY EXCERPTS FROM HUMAN 
SUBJECT RE: SCP-3591 


Comatose human subject recovered from SCP-3591 was 
analyzed and found to be a baseline ordinary human in ill 


health, altered only due to obvious exposure to non- 
Earth elements, chemicals, etc, and surviving off of 
consuming non-Earth substances as food. Subject likely 
used anomalous techniques to survive. Analysis also 
indicated that subject originated from a parallel universe. 


Nine months and seven days after recovery from 
SCP-3591, subject woke from coma. 


Initially, subject did not respond to English, instead 
attempting to communicate in several languages which 
do not exist on Earth, interspersed with bouts of 
hysterical laughter. Eventually, subject seemed to 
recognize English phrases, and started responding 
accordingly. With brief practice, subject rapidly returned 
to fluency. 


Subject attitude is moody, presenting long rants with little 
useful information interspersed with much longer periods 
of silence and occasional laughter. 


On subject's own nature and origin: 


Subject refuses to give name, but acknowledges being 
human, and originating from a reality largely 
indistinguishable from this reality. 


Subject is aware of the SCP Foundation. Subject claims 
to have changed everything about themselves (including 
physical and mental form) to "escape", refusing to clarify 
what they wished to escape from. Subject also refuses to 
clarify their original relationship to the SCP Foundation. 


There are strong implications that subject believes that 
this reality is their original home reality, and therefore 
that this SCP Foundation has a strong interest in 
identifying subject's original identity. For now, protocol 
dictates not contradicting this conclusion. 


Subject claims not to remember the details of how they 
came to be inside SCP-3591, but claims it wasn't a 


surprise. Subject claims former familiarity with 
anomalous knowledges of transit, familiarity which is now 
absent thanks to mental alteration by contact with 
excessive numbers of dangerous anomalous entities. 


I'm a stowaway. Everything on there, all 
stowaways too. Like rats sailing across with 
the ships to America. Or the fleas that came 
with them. | think a lot about rats, about 
insects, about the small things. | will not crush 
a bug. Not even a roach. Or a flea. If you knew 
what | knew, you wouldn't either. [...] Hahaha. 
No. I'm not saying they are... what's the word. 
Sentient. [...] Fine, sapient. Fine. You know 
what | mean. I'm just saying, | know how they 
feel. Or would feel, if they could. 


On the nature of SCP-3591: 


| can't explain it to you directly. Just showing 
you the things I've seen would break your 
mind right in half. Trust me. I've been there. 
And for what? You don't get it. This thing, this 
giant, it's not special. A woman steps on an 
anthill, maybe she's a little startled. A week 
later, she forgets. To the ants, this woman was 
the biggest thing that ever happened to them, 
to anyone they ever knew. 


But the woman isn't special. The world is full of 
things bigger than the woman. It's just that the 
anthill is even less special. 


When asked to elaborate on the potential dangers of 
SCP-3591: 


It's not dangerous. It's dead. | guess, yeah, it's 
still dangerous as hell, but not on purpose. If 
you have data telling you it caused some 
apocalypses, you should probably reexamine 
that data. This thing ain't causing any ends of 


the world. Not on its own. 


When asked to elaborate on what caused the death 
of SCP-3591: 


What killed it? The war killed it. 


Subject initially refused to elaborate, but a week later, 
when pressed, gave their longest answer yet. 


There's a war being fought, fought by things 
you and | can't even understand. This thing | 
hitched a ride in, you're only seeing a tiny 
fraction of it. It's bigger than gods, to you, to 
us. But in the war, the real war out there, on 
the universal scale that matters, this super- 
deity is the lowest of the low. A faceless, 
forgettable army grunt. It doesn't have any 
great and special reason for being here. It was 
killed in battle and fell to Earth, and that's it. 


Your problem isn't that you can't see this thing 
correctly. That's impossible, and it only bothers 
you because you won't stop trying. Your 
problem — your problem is perspective. What 
is... what's the word? Zoom out. Zoom out 
farther! 


There's a war out there, yeah. We all learned 
about wars in history class. Once upon a time 
an army was fighting a war. Few of them had 
any idea why they were fighting. All forces 
bigger than they were. They said it was a war 
to end all wars. They were wrong. But | don't 
care about that. | care about the ants. 


(Pause) 


Sorry, right. Where was |? Right. World War I. 
| think about World War | like | think about rats 
on ships. | think about when the soldiers saw 


the mustard gas for the first time, how they 
didn't even know what to do. The world had 
changed underneath them and they were 
going to die horribly and they couldn't do 
anything to stop it. | can't imagine what the 
soldiers, even the civilians, what they must 
have felt when they saw the first tank roll 
through. The first tank in the world. Can you 
imagine?