SCP-8510: The Hall of Never-Ending Doors

Item#: 8510

Level3

Containment Class:

esoteric

Secondary Class:

thaumiel

Disruption Class:

dark

Risk Class:

danger

link to memo

Assigned Site

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Site-77

Site Director

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Dr Cookman

Research Head

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Dr Richmond

Assigned MTF

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Epsilon-55

Assigned Site

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Site-77

Site Director

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Dr Cookman

Research Head

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Dr Richmond

Assigned MTF

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Epsilon-55

Special Containment Procedures: SCP-8510 is to be guarded by a chain link fence with barbed wire on the top surrounding the perimeter, and four security personnel patrolling the perimeter, two patrolling the inside of the fence and two patrolling the outside of the fence.

SCP-8510 can be used for interrogation and torture, but any usage of SCP-8510 must be monitored by MTF Epsilon-55 (“Loop Breakers”) and a Level-4 Director.

Description: SCP-8510 is a one-story house with a four door hallway to the right when you enter. However, instead of the hallway ending at four doors, it keeps going and going forever with no end in sight. When you try to go back after walking for a while, it blocks you off at the first four doors you started at with a wall. However, on the other side of the wall, researchers say that there is no wall visible, and instead it makes it look like the test subject is acting like a mime.

There have been multiple tests on this, and one shocking discovery has been found just recently.

Addendum:

+ Research Log.01

The following is a research log from Dr. Richmond where many D-Class were used.

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Test #001
Subject	D-83765
Protocol	D-83765 was equipped with a shoulder-mounted flashlight and a body camera.
Results	D-83765 entered SCP-8510 and began walking. Camera footage cut out after 5 minutes. D-83765 has not returned after 2 years and is now presumed as dead.

Test #002
Subjects	D-83124 D-84415
Protocol	Both D-83124 and D-84415 were equipped with a shoulder-mounted flashlight and a body cam as well as a rope attached to them.
Results	D-83124 and D-84415 walked into SCP-8510 at the same time. 10 minutes later, only D-83124 came running and screaming out of SCP-8510. D-84415 was nowhere to be found and is presumed dead. Footage from body cam was found slightly corrupted.

Test #003
Subject	D-88013
Protocol	D-88013 was equipped with standard testing items. D-88013 was given SCP-8719 under the authorization of Dr. Cookman for the test. D-88013 walked into SCP-8510 with two members of MTF Epsilon-55 (“Loop Breakers”) following.
Results	D-88013 walked into SCP-8510 with two members of MTF Epsilon-55 (“Loop Breakers”) following. 15 minutes later, D-88013 came running out of SCP-8510 with E55-1 slung over his shoulder as D-88013 shot at something in SCP-8510 using SCP-8719 along with E55-2 also firing their gun at something in SCP-8510. Mark Waller, E55-1, was found to be injured with a gash on his left leg. His wound was treated by medical staff and he was given 3 weeks paid leave to recover. The footage on the body camera of D-88013 revealed that the cause of E55-1’s injury was caused by D-837651. However, this version of D-837651 had dark holes in its eye sockets and a pitch black smile that, quite literally, stretched from ear to ear. D-88013, Alastor Spark, was known as a hero in Site-77 and is now a part of Mobile Task Force Epsilon-55.

+ Interview.01

The following file is an interview between Head Researcher Dr. Richmond and D-83124.

WARNING: THE FOLLOWING FILE IS CLASSIFIED AND IS ONLY ACCESSIBLE BY THE 05 COUNCIL

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ANY ATTEMPT TO ACCESS THIS FILE WITHOUT COUNCIL AUTHORIZATION WILL BE LOGGED AND WILL LEAD TO TERMINATION OF EMPLOYMENT AT THE SCP FOUNDATION.

Interviewed: D-83124

Interviewer: Dr. Richmond

Foreword: Site Director, Dr. Cookman, was listening to the interview so that he could give the 05 Council a full explanation of the incident.

<Begin Log>

Richmond: Hello. I am Dr. Richmond. I am here today with a D-Class who survived a test a week ago. Please say your name.

Adam: Hello. I am D-83124, but you can call me Adam

Richmond: Okay. So, Adam. Tell me what happened one week ago, during the test.

Dr. Richmond connects a tape recorder to a microphone in the middle of the table. He pops in an empty tape and hits “Record”.

Adam: Okay. So, me and my friend John were hooked up with some equipment. A shoulder flashlight, a body cam, and a rope. Once we were given the signal, we started walking. We talked while walking for 6 minutes until we saw something and stopped.

Dr. Richmond nods as he writes on a clipboard.

Adam: Being the brave man as he is, John walked up to it to get a better view. We saw a d-class uniform on it, but when we shone our flashlights on its face, we saw that he was missing his eyes and he had a smile with no teeth that, quite literally, stretched from ear to ear. All that was in those empty spaces was just pitch black darkness. John tried to run, but it grabbed him and began to transform him into one of them.

Dr. Richmond stops writing and sets his clipboard down.

Adam: After that, I just started running and didn’t stop. I didn’t look back, but I knew that John was looking at me with that same black smile. I didn’t want to risk my life to try and save him, but at the same time, I feel guilty for leaving him behind.

Adam sniffles and looks down at the table.

Adam: And to think… we just met then, but he became my one and only friend here.

Adam then begins crying, his tears creating a puddle in front of him.

Dr. Richmond: There there, Adam. I know how it feels. I’ve lost a friend to that same thing.

Adam: sniff sniff You did?
Dr. Richmond: Well, let’s sit down and I’ll tell you about it.

Adam nods and sits back down.

Dr. Richmond hits stop on the recorder and ejects the tape. He then puts in a new tape and hits play.

Dr. Richmond: It was 3 weeks ago. SCP-8510 was a new SCP to this Site. Me and my friend, Ashley, were sent to explore SCP-8510. All we had was a handgun and a flashlight. We started walking, and we made a pretty good bond with each other. I even confessed my feelings for her and she said that we could make something out of it. We then encountered this guy wearing a researcher’s uniform. Except he was like the D-class that you described. Ashley sacrificed herself so that I could escape. I shot a few bullets, but I then turned and left. Ashley fired her entire gun as I ran, but it did nothing. I left her behind, and the guilt still weighs down on my shoulders.

Dr. Richmond sniffles as a few tears hit the table. He wipes his eyes with his sleeve and looks back up.

Adam: I’m… so sorry.

Dr. Richmond: It’s alright. At least we both know how it feels so that we aren’t wondering why one of us is sad all the time.

Adam smiles

Adam: Yeah. I think I found my new friend.

Dr. Richmond: As did I.

Dr. Richmond hits stop on the recorder.

<End Log>

Closing Statement: D-83124 has been given free access to talk with Dr. Richmond when he wants. Weekly therapy sessions are also scheduled for D-83124.

+ Exploration.01

The following file is a recording of Dr. Richmond and D-83124 exploring SCP-8510 to get a sample from SCP-8510-1.

Exploration Video Log Transcript

Date: November 30, 2026

Exploration Team: Research Squad-1

Subject: SCP-8510, SCP-8510-1

Team Lead: Dr. Richmond

Team Members: D-83124 - Adam

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[BEGIN LOG]

Dr. Richmond: You ready, Adam?

Adam: Yeah. Why the hell not? Let’s do this shit.

Dr. Richmond and Adam load their rifles, tighten the ropes tied to their waists, and they begin to walk in.

Dr. Richmond: At least this one has ample lighting. Unlike SCP-087.

Adam: True that. At least I can see without a flashlight in here.

They keep walking until they see an instance of SCP-8510. They sneak up behind it and Dr. Richmond jabs a syringe into the dark socket of the instance. It yells in pain as Dr. Richmond extracts some black liquid. Adam grabs his rifle and points it at the instance, ready to fire at any moment.

Dr. Richmond: Got it! Now run!

They both run out as the instance chases them. Adam fires a few rounds at its legs, hindering its movement. They manage to get out as MTF Epsilon-55 begins to fire at the instance.

Adam: Well, at least we survived.

Dr. Richmond: Agreed.

[END LOG]

+ Research Log.02

The following file is a research log by Dr. Richmond regarding the black liquid substance that he and Adam extracted from the instance of SCP-8510.

Name of test: SCP-8510-1 Test #001

Researcher: Dr. Richmond

Foreword: “I do not recommend any tests on SCP-8510 until this is finished” - Dr. Cookman, Site Director

<Begin Log, 12-01-2026, 06:30 A.M.>

Dr. Richmond: Okay. This is test #001 on what I am going to call “8510-1 substance” or “Substance Black”. This sample was retrieved yesterday by me and D-83124. Let’s see what happens when a small amount is injected into someone.

Dr. Richmond hands a syringe filled with the substance to a Security personnel, who takes it and walks over to a D-class.

Dr. Richmond: on the intercom D-66130, you are going to be injected with an unknown substance. Tell us if you feel any different.

D-66130 gives a thumbs up as he is injected with “Substance Black”.

20 minutes later, D-66130 vomits up the same black substance as his eyes fill with the black substance. His smile grows wider, but is killed before he could become hostile.

Dr. Richmond: Interesting. I think this could be used for a good purpose. I just need to figure out how to turn it into something good.

<End Log, 06:50 A.M.>

Closing Statement: “This substance is still being researched, but seems very dangerous. Until then, all requests to test on SCP-8510 are declined.” -Dr. Cookman, Site Director.

+ Research Log.03

This file is a continued version of Research Log.02. This is made by Dr. Richmond. This is a research file of Dr. Richmond trying to make “Substance Black” something good.

Name of test: SCP-8510-1 Test #002

Researcher: Dr. Richmond

Foreword: “I do not recommend doing any tests on SCP-8510 until this entire test is finished” - Dr. Cookman, Site Director

<Begin Log, 12-02-2026, 08:00 A.M.>

Dr. Richmond: Okay. This is test #002 on “Substance Black”. I’m going to see if I can turn this into something good.

Dr. Richmond takes a test tube and pours some of “Substance Black” into it. He then takes a few more chemicals and pours it in with “Substance Black” in the test tube.

Dr. Richmond: Let’s see what happens when put in a centrifuge.

Dr. Richmond puts a top on the test tube. He then puts it in a test tube centrifuge and starts it at 30 G-Force for 20 minutes. He takes a picture of the test tube before he puts it in the centrifuge.

20 minutes later, Dr. Richmond take s the test tube out and compares it to the picture before he put it in the centrifuge.

Dr. Richmond: Interesting. A few of the chemicals mixed together with “Substance Black”. Other chemicals are still separate from the new substance. It appears to be a blue-reddish color. Let’s see about heat.

Dr. Richmond takes a Bunsen burner and puts the test tube on it. He then heats it up.

10 minutes later, Dr. Richmond turns off the burner and looks at the test tube.

Dr. Richmond: Seems that all the chemicals have mixed together to create this…weird glowing reddish-blue substance. Weird. I’ll call it “Substance Purple.”

<End Log>

+ Research Log.03

The following is a continued version of Research Log.02 and Research Log.03. This file was created by Dr. Richmond, who was testing the new substance they created.

Name of test: SCP-8510-1 Test #003

Researcher: Dr. Richmond

<Begin Log, 12-03-2026>

Dr. Richmond: Okay. This is test #003 on Substance Black. I managed to turn it into a different substance, which I am calling Substance Purple. So we are going to test it on someone who has been chained to the wall and injected with Substance Black.

Dr. Richmond hands a syringe filled with Substance Black to a Security personnel, who takes it and walks over to a D-class and injects them with it.

20 minutes later, the D-class has been fully affected by Substance Black. Dr. Richmond then takes a syringe filled with Substance Purple and walks to the D-class.

Dr. Richmond injects the D-class with Substance Purple.

5 minutes later, the D-class returns to normal

Dr. Richmond: I’ve done it! I’ve created a cure for the Black Outbreak! Finally, I can save my friends.

<End Log>

Closing Statement: “Now that a cure has been made for SCP-8510-1 instances, anyone who tests on SCP-8510 must have a syringe with this cure with them in case something goes wrong.” -Dr. Cookman, Site Director.

‡ Licensing / Citation

Cite this page as:

"SCP-8510: The Hall of Never-Ending Doors" by (user deleted), from the SCP Wiki. Source: https://scpwiki.com/scp:10. Licensed under CC BY-SA.

For information on how to use this component, see the License Box component. To read about licensing policy, see the Licensing Guide.