(“WALDO-6 unit”) equipped with visible-light 
and infrared imaging will be deployed into 
SCP-3194 to determine its extent. 


Result: WALDO-6 unit made it 10.11 km 
before exhausting its battery power and 
shutting down. No new features documented. 
WALDO-6 unit remains inside SCP-3194. This 
structure is obviously much larger than 
suspected. Recommend calling in MTF Zeta-9. 


Request for MTF deployment approved. 
— , Area 837B Director 


Exploration Report 3194-02 
Date: / / 


Report Filed By: Dr. , Lead researcher, 
SCP-3194 


Mission Brief: MTF Zeta-9 (“Mole Rats”) will 
be equipped with two days’ supplies plus 
reserve margin and sent into SCP-3194 with 
orders to proceed until they find something 
worth reporting or have to turn back. 


Result: MTF Zeta-9 forced to turn back after 
11 hours (49.8 km) due to mission- 
jeopardizing claustrophobia symptoms on part 
of all team members. Recommend 
psychological screening or other precaution in 
future. 


Zeta-9 members are screened for 
claustrophobic tendencies, 
Claustrophobia is practically the job 
description. — , Mobile Task Force 
Command 


Exploration Report 3194-03 


Date: / / 


Report Filed By: Dr. , Lead researcher, 
SCP-3194 


Mission Brief: MTF Zeta-9 (“Mole Rats”) will 
be equipped with two days’ supplies plus 
reserve margin and sent into SCP-3194 with 
orders to proceed until they find something 
worth reporting or have to turn back. Anxiolytic 
regimen to include mg times 
daily. 


Result: MTF Zeta-9 reached the 50 km mark. 
No interior features identified. Inclinometer at 
50 km indicated a slope of 2.10°, consistent 
with hypothesis that SCP-3194 runs 
perpendicular to earth’s axis. Reflector-aided 
laser surveying confirms SCP-3194 is as close 
to perfectly straight as we can measure. 


Estimates of the geometry of SCP-3194 
suggest that, if it just keeps going, it should be 
at most 567 km long. The size of the tunnel 
and lack of air circulation makes gas-powered 
vehicles impractical, and we don’t have 
anything electric with nearly enough range. All 
things being equal, it should take MTF Zeta-9 
approximately 105 hours to cover this distance 
on foot. Factoring in rest periods and a safety 
margin, that’s a maximum of ten days there, 
ten days back. In the dark. Alone. Better them 
than me. 


Exploration Report 3194-04 
Date: / / 


Report Filed By: Dr. , Lead researcher, 
SCP-3194 


Mission Brief: MTF Zeta-9 (“Mole Rats”) will 
be equipped with twenty days’ supplies plus 
safety reserves and sent into SCP-3194 with 
orders to proceed until they find something 
worth reporting, have to turn back, or come out 
the other side. Anxiolytic regimen to include 
mg times daily. 


[Mission log excerpt begins.] 


C-9-24: Niner two four to base, checking in, 
MET eight seven hours. Copy? 


Base: Copy your eighty seven, _. Still 
nothing to report? 


C-9-24: Just more of the same. Coming up on 
two two five klicks. All is well. 


Base: Copy that. Catch you on the flip side. 
[Radio silence for 38 minutes 41 seconds.] 
C-9-24: Niner two four to base, copy? 
[Radio silence for 49 seconds.] 


Base: Uh, copy, nine twenty four. Sorry about 
that. Go ahead. 


G-9-24: Base, we may see light up ahead. 
Base: Say again, twenty four? 


G-9-24: Yeah, we’re as surprised as you. 
says there’s a light up ahead, and the rest of 
us concur. It’s dim but it’s there. 


Base: Any environmental changes? Confirm 
temperature, BP, inclinometer. 


[Radio silence for 21 seconds.] 


G-9-11: Minus eleven C, twelve ninety four 
millimeters. 


Base: Thanks, . Uh— 


G-9-11: Inclinometer’s reading zero point four 
five. 


Base: Right, got it. 


G-9-24: Could this be the , base? Are we 
hallucinating here? 


Base: Uh, unknown at this time, twenty four. 
Hold the line, will you? | gotta wake some 
people up. 


G-9-24: Copy that. 
[23 minutes of log omitted. ] 


Base: Nine twenty four, your orders are to 
proceed. 


G-9-24: Proceed? 
Base: That’s what they’re telling me. 


G-9-24: Understood. Will check in at — okay, 
we missed eighty eight. Will check in at eighty 
nine in fifty eight minutes. 


Base: Copy. Out. 
[58 minutes of log omitted. ] 


C-9-24: Niner two four to base, checking in, 
MET eight niner hours. 


Base: | read you, twenty four. What’s the story 
on that light? 


G-9-24: It’s definitely there, base. Doesn't look 


any closer. We tried to roll some tape on it but 
| think it’s too dim to pick up. 


Base: Understood. Doctor wanted me to 
ask you if there’s any chance you might be 
seeing daylight? 


G-9-24: | don’t think so, base. It’s flickering, not 
steady. Could be atmospherics | guess, 
depends on how far out it is. It’s really dim. 


Base: Copy. Anything else to report? 


C-9-24: Negative, base. All is well. Will report 
in at MET niner zero. 


Base: Copy that. See you in an hour. 

[31 minutes of log omitted. ] 

Base: Zeta nine twenty four, come in please. 
G-9-24: Go for niner two four. 


Base: Doctors and are here. They say 
you're recalled. Stop where you are and begin 
heading back. 


[Radio silence for 14 seconds] 
C-9-24: Base, please repeat. 


Base: Your sortie has been aborted. Return to 
base. 


G-9-15: Well that’s goddamn anticlimactic. 
C-9-24: [Unintelligible.] 
G-9-15: Sorry. 


G-9-24: Base, we copy your about-face. We 
are starting back now. Will check in at MET 


niner zero hours. 


Base: Very good, nine twenty four. Sorry 
about this. Talk to you soon. 


[Mission log excerpt ends.] 


Result: MTF Zeta-9 returned to the surface 
after 164 hours inside SCP-3194. Video 
recordings were unable to resolve any light 
inside SCP-3194, even under image 
intensification. Request submitted to the 
Medical Division for any information on 
hallucinatory side effects of at high 
doses. 


Recommend the conversion of a Mark VI-B1 to 
gas power with minimum range of 600 km. 


No record of hallucinatory side effects of 
atdosesupto mg. — Dr. 
, Medical Division 


Converting a Mark VI-B1 isn’t really a practical 
option. We're looking at a from-scratch build 
here. There are budgetary factors to consider. 
— , Robotics Division 


Request for construction of gas-powered long- 
range remotely operated exploration robot 
approved. — , Area 837B Director 


Fine, but don’t hold your breath for it. — 
, Robotics Division 


Exploration Report 3194-05 
Date: / / 


Report Filed By: Dr. , Lead researcher, 
SCP-3194 


Mission Brief: A Mark VII-A1 remotely 
operated exploration robot (“WALDO-7 unit”) 
to be deployed inside SCP-3194. Visible-light 
and infrared data to be collected and 
transmitted in real time via S-band. Purpose of 
mission is to determine whether light 
phenomenon reported during previous 
exploration can be verified. 


[Mission log excerpt begins.] 


fed. : WALDO-7 unit reaches 225 km 
point autonomously without documenting any 
new phenomena. 


oe : WALDO-7 unit is advanced under 
manual control to 248.41 km where visible and 
infrared light are detected consistent with 
report from previous exploration. 


1h : WALDO-7 unit is advanced under 
manual control to 265.90 km where visible- 
light camera resolves what appears to be an 
end to the tunnel, approximate distance 15 km. 


tage : WALDO-7 unit is advanced under 
manual control to 280.45 km. Tunnel ends ina 
chamber of uncertain dimensions; microwave 
ranging off-scale high. Source of light 
approximately 3 km from chamber entrance, 
estimated by parallax. Environmentals 
nominal. Inclinometer reading off-scale low. 


iy : WALDO-7 unit is advanced under 
manual control toward source of light. Source 
appears to be a toroid of hot gas. 
Phenomenon resembles nothing so much as a 
tornado of fire laying on its side with its “eye” 
facing the chamber entrance. Estimate gas 
torus to be at least 20 m in diameter. At 500 m 
from gas torus, environmentals remain 


nominal. 


as : WALDO-7 unit is advanced under 
manual control toward gas torus. 
Environmentals remain nominal despite 
proximity to gas torus. Estimate gas torus to 
be 30 m along long axis. 


oe : After recording 8 hours 22 minutes 
of visible and infrared footage, no change is 
observed in gas torus except apparently 
normal toroidal-poloidal gas circulation. 
Mission terminated. 


[Mission log excerpt ends.] 


Result: Clearly anomalous phenomenon 
observed inside SCP-3194. Phenomenon 
should be putting out large amount of heat, but 
no temperature change observed. Radiological 
readings normal, magnetic readings normal. 
It’s like it’s not really there. Recommend MTF 
Zeta-9 for manned follow-up: millimeter-wave, 
spectrometry, possible sample return. 


Request redesignation of tunnel as 
SCP-3194-1, chamber as SCP-3194-2, 
phenomenon as SCP-3194-3. 


Request for manned follow-up exploration 
approved. Request for redesignation 
approved. Request for sample return denied. 
— , Area 837B Director 


Exploration Report 3194-06 
Date: / / 


Report Filed By: Dr. , Lead researcher, 
SCP-3194 


Mission Brief: MTF Zeta-9 (“Mole Rats”) will 


SCP-406: Sleepwalker's Tunnel 


SCP-406's western entrance. 


Item #: SCP-406 


Object Class: Euclid 


Special Containment Procedures: Task Force Tau-6 are assigned 
to monitor SCP-406 and process SCP-406-1 instances. They are to 
be based in a converted small industrial unit at a nearby industrial 
park, behind a Foundation front company ("Simon's Carpet 
Paradise"). 


The emergence point and western entrance of SCP-406 are to be 
monitored via closed circuit television cameras. Concealed lighting 
and infrared sensors are to be fitted to detect and illuminate 
emerging SCP-406-1 instances, and emergency clothing, non- 
perishable food, and basic first aid supplies are to be concealed 
behind false brickwork on the opposite wall. Two-way audio 
communication is to be enabled, via concealed microphones and 
speakers, between Tau-6 and the emergence point, to guide and 
instruct SCP-406-1 instances, and to wake them if necessary. The 
gate at the open western entrance is to be kept locked. Trespassers 
are to be monitored and are to be detained and administered 


be equipped with twenty days’ supplies plus 
safety reserves and sent into SCP-3194-1 with 
orders to proceed to SCP-3194-2. Millimeter- 
wave radar scans of SCP-3194-2 to be 
performed, along with spectrometry of 
SCP-3194-3. Anxiolytic regimen to include 

mg times daily. 


[Mission log excerpt begins.] 
G-9-24: Niner two four to base, come in? 
Base: Go for base. 


G-9-24: We have reached the — what are we 
calling it? 


@-9-11: [Unintelligible] 


G-9-24: Right, SCP-3194-2. It’s ... hard to 
describe, frankly. 


Base: Please try, nine twenty four. 
[Radio silence for 21 seconds.] 
G-9-11: Uh, it's — can | talk? 
C-9-24: [Unintelligible] 


Base: Affirmative, nine eleven. Please go 
ahead. 


G-9-11: It’s weird here. There’s no echo. The 
floor’s the same uniform stone tiles as the 
tunnel. You'd expect the room to be really 
echoey. But it’s just dead. There’s no sound at 
all. 


Base: Can you describe what you see? 


G-9-11: Kind of? There’s the — there’s dash 


three off in the distance, obviously. It’s not that 
bright. Doesn't hurt to look at it or anything. It 


C-9-24: Are you rolling? 
G-9-15: Oh yeah. 


G-9-11: It must be putting out a lot more light 
than it looks like, because | can just make out 
the ceiling. You know how if you see 
something really dim in a dark room you can’t 
see it if you look straight at it? Cause of your 
what you call it. 


7-9-6 and Z-9-15: Fovea.3 


G-9-11: Yeah. You have to look at it sideways 
because your low-light vision isn’t as good 
when you look straight at something. It’s like 
that. If | look straight up it’s just black, but if | 
side-eye it | can make out ... something. 


Base: Wait one, zeta nine. 
G-9-24: Copy that. 
[Radio silence for 22 seconds.] 


Base: Twenty four, Dr. wants you to set 
up the millimeter-wave now. 


G-9-24: Copy that. Give us five minutes. 
[Radio silence for 4 minutes 35 seconds. ] 
G-9-24: Niner two four to base. 

Base: Yeah, ? 


C-9-24: Millimeter-wave is powered up, all 
indicators green. Ready to begin transmitting. 


Base: Okay, .Doctor reminds you to 
withdraw into 3194-1 during the scan. 


G-9-24: Thank Doctor _ for the reminder. 
Pressing the big green button now. 


[Radio silence for 8 minutes 54 seconds.] 


Base: Scan complete, . The data are alittle 
noisy but we’ve—what? That’s impossible. 
[Unintelligible.] _, uh, nine twenty four, give 
us a minute here. 


[Radio silence for 3 minutes 11 seconds.] 
Base: Nine twenty four, copy? 
G-9-24: Go for niner two four. 


Base: Doctor is asking you to please 
deploy a flare above your current position. 


G-9-24: Copy that. ? 
C-9-6: On it. 


[Radio silence for 49 seconds. Sound of flare 
gun being fired. Radio silence for 4 seconds.] 


G-9-24: Mother of God. 
G-9-11: [Retching sounds.] 
C-9-6: [Unintelligible.] 

Base: Nine twenty four, sitrep. 


[Retching sounds and unintelligible crosstalk 
for 28 seconds. ] 


Base: Zeta nine, sitrep. 


[Retching sounds for 6 seconds.] 


7-9-24: Shit. 

Base: Zeta nine, do you copy? 
G-9-24: Yeah. Hang on. 

Base: Zeta nine, say again. 


G-9-24: | said give us a second here, goddamn 
it. and are in a bad way. 


Base: Please elaborate. 
[Radio silence for 24 seconds.] 
C-9-24: Okay, it’s going out. | think— ? 


G-9-11: Yeah. Okay. [Retching sounds.] |'m 
okay. 


G-9-24: Base, niner two four. We got a good 
look around the chamber. It’s hard to take. 
Disorienting. 


Base: Please elaborate? 
C-9-24: Right. Its— 
[Radio silence for 4 seconds.] 


C-9-24: [Exhalation.] \t’s large. The chamber 
we're in, dash two, is very large. Cannot 
estimate dimensions. There’s no sense of 
scale. Or, | mean ... the sense of scale is all 
wrong. 


G-9-11: It’s like being a mosquito in an aircraft 
hangar. 


Base: Did you get video? 


G-9-15: | was busy trying not to piss myself. 


Base: Understood. Wait one, zeta nine. 
[Radio silence for 14 seconds.] 


Base: Nine twenty four, Doctor is asking 
you to describe your physical symptoms. 


C-9-24: [Unintelligible.] 
G-9-11: [Unintelligible.] 


C-9-24: | think it’s just vertigo. Dizziness and 
nausea. and have vomited, but 
they’re okay now. Really bad vertigo. The 
flare’s burned out now so we're back in the 
dark. It’s better. Not great, but better. | think 
we're okay now. 


Base: Copy that. Doctor wants vitals on 
all of you: rate, BP. Are you able to comply? 


C-9-24: ? 
G-9-6: [Spitting sound.] Aye aye. 
[12 minutes of log omitted. ] 


Base: Okay, copy all that. Looks nominal. You 
are ordered to proceed toward 3194-3 as you 
are able. Maintain five hundred meters from 
3194-3. 


G-9-24: Copy, base. Proceeding to half a klick. 
Oscar mike. 


[38 minutes of log omitted. ] 
G-9-24: Niner two four to base. 
Base: Go ahead. 


G-9-24: We're approximately five zero zero 


meters from dash three. It’s hard to tell for 
sure. No landmarks at all. This place is 
absolutely empty. Except for— 


G-9-11: [Unintelligible.] 


G-9-24: Base, we can’t see any features. 
Chamber appears to be completely empty 
except for dash three. 


Base: Say again your last, nine eleven, we 
didn’t copy that. 


G-9-11: | said “him.” | don’t know why | said 
that. 


C-9-6: [Unintelligible.] 
G-9-11: No. | mean yeah, I’m good. 


Base: Nine twenty four, Doctor wants 
another vitals check. 


G-9-11: | said I’m good. 
G-9-24: Just do it, 

G-9-6: Aye aye. 

[14 minutes of log omitted. ] 


Base: Uh, okay, they’re telling me you’re still 
within safety margins. You are to proceed to 
fifty meters from 3194-3 and prepare the 
spectrometry experiment. 


G-9-24: Okay, base, we copy. We're off to see 
the wizard. 


[Radio silence for 7 seconds.] 


Base: Base copies. 


[Radio silence for 19 minutes.] 
C-9-24: Base, come in. 
Base: Base copies, go ahead.