Item #: SCP-5101
Object Class: Euclid
Special Containment Procedures: All records detailing SCP-5101, including this document, are to be contained within three conceptual barriers hereafter referred to as Threshold Maya, Threshold Puimre and Threshold Yuf.
Threshold Maya is a circular formation five meters in diameter, which surrounds Threshold Puimre, Threshold Yuf and all SCP-5101 documentation. Threshold Maya is to be composed from a mixture of industrial-grade chalk and fresh grain. These materials are to be replenished twice a week. No personnel are to visually observe Threshold Maya while it is being replenished under any circumstances.
Threshold Puimre is a circular formation three meters in diameter, which surrounds Threshold Yuf and all SCP-5101 documentation. Threshold Puimre is to be composed from a mixture of pigeon blood and cement. These materials are to be replenished six times a month1. During replenishment, personnel are to ignore any demands posed by Threshold Puimre.
Threshold Yuf is a circular formation one meter in diameter, which surrounds and contains all SCP-5101 documentation. Threshold Yuf is to be composed from a mixture of human spinal fluid and industrial-grade chalk. These materials are not to be replenished under any circumstances2. Once a month, a humanoid entity will appear on the border of Threshold Yuf and inform personnel of any adjustments that must be made to these containment procedures. These instructions are to be followed without question, and the entity is then to be executed using a gunshot to the head.
Outside of the maintenance specified in these containment procedures, personnel are to make no physical contact with Threshold Maya, Threshold Puimre or Threshold Yuf.
Description: SCP-5101 is a set of anomalous containment procedures which, when properly enacted:

Prevent any entity within its boundaries from interfering with the outside world.
Prevent any sentient entities in the outside world from interfering with that which is contained.

Due to the lack of information on how SCP-5101 operates and the suspicious nature of its creation, it has been denied re-designation as Thaumiel and is instead currently being used to contain itself3.

Addendum 5101-1 (Circumstances of Creation)

SCP-5101 was created by Julius Green, a RAISA Containment Specialist4, under orders from the Overseer Council to develop procedures capable of containing a highly dangerous object or entity. Due to security concerns, the Foundation is not at liberty to further discuss this anomaly.
However, the Overseer Council has declassified the following message exchange for use in tracking the development of SCP-5101.

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Mr. Green, O5-6 has requisitioned your assistance with the containment of a classified anomaly. Further context is attached to this message. You are to drop all existing projects and focus all your efforts upon this task.
Note that this anomaly is classified 'Pitch Black' in terms of information control. As a result, the following measures will be taken upon your completion of this task:

You will undergo amnestic therapy to remove all memories of your work with the anomaly.
You will be subject to additional cognito-agents designed to prevent you from reasoning what you have been doing during your missing portion of memory.
You are expressly forbidden from discussing your work with any colleagues. If this directive is not followed, severe consequences will ensue including possible termination of language privileges.
The anomaly you are working on will not be listed in any Foundation database, and you will not receive credit for your work.

O5-6 awaits your agreement to these terms. Reply at your earliest convenience.

From: Julius Green
To: Attendant JL

With all due respect, the information you've given me here is extremely limited, and I honestly can't see how I'm expected to draft up containment procedures when I don't have a full idea of what I'm containing. Quite frankly, the details you've given me access to aren't even enough to give it an Object Class.
I understand the need for secrecy, but you need to give me more than this. I didn't manage to lock those other threats up with a blindfold on.

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Negative. You have already agreed to this task as dictated by O5-6, and it will not accept delay. See that your work is complete in 7 days time.

From: Julius Green
To: Attendant JL

That's being extremely unreasonable. If you want me to work under these conditions, I won't be able to produce anything of quality. Can I speak to your superior directly about this?

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Negative. You have already agreed to this task as dictated by O5-6, and it will not accept delay. See that your work is complete in 6 days time.

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Your deadline is approaching. See that your work is complete in 5 days time.

From: Julius Green
To: Attendant JL

Yes, I understand that my deadline is approaching. I've started to consider the problem from a more general perspective - containment as a whole rather than containment for one specific thing, if that makes sense - but it takes a lot of focus, and quite frankly your constant reminders about the deadline isn't helping.
I'd like to reqest [sic] that you cease these. Please rest assured, I'll have the procedures to you in time.

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Negative. Your deadline is approaching. See that your work is complete in 4 days time. Otherwise, you will be subject to severe consequences.

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
Your deadline is approaching. In addition, the budget you have proposed is excessive and has thus been rejected. See that your work is complete in 3 days time.

From: Julius Green
To: Attendant JL

STOP

From: Julius Green
To: Attendant JL

I would like to sincerely apologize for my last email. I was running low on sleep and - while that's no excuse - it made me lash out when I saw your message. I

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
That's quite alright. Incidentally, your deadline is approaching. See that your work is complete in 2 days time. Otherwise, you will be subject to severe consequences including termination.

From: Julius Green
To: Attendant JL

nEED MORE TIME [sic]

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
1 day left. If you delay further, we may be forced to question your loyalty to the Foundation and take the following action:

Investigation into your prior assignments, and potential reversion of changes you have made to these containment procedures.
Investigation and potential detainment of coworkers, family members and close friends who could be potential enemy contacts.
Complete erasure of your personnel file from Foundation records.
Complete erasure of your identity via use of amnestics.
Termination.

Note that - although several of these measures may already be underway - we would prefer not to be forced to execute these excessive procedures, and any actions taken will be reverted upon completion of your assignment.
Tick tock.

From: Julius Green
To: Attendant JL

see attached. see
circles contain circles contain circles contain everything
i would like my amnesiacs [sic] now pleas [sic] there's a circle in my skull

On 28/01/2020, the corpse of Julius Green was found in his office at Site-22. Autopsy determined the cause of death to be spontaneous combustion of his brain matter. A copy of SCP-5101 had been sent to Attendant JL, and a second copy was present in written form on his desk.
As Attendant JL had not yet been made aware of the situation and thus had no way of knowing of Mr. Green's death, an additional message was sent following the creation of SCP-5101:

From: Attendant JL
To: Julius Green

FROM THE OFFICE OF O5-6
We've received your files. Excellent work, Mr. Green. We always had the utmost faith. Get some rest.

Footnotes
1. The timing of these replenishments are not relevant, and can be performed in rapid succession at the start of every month.
2. Once Threshold Yuf has faded to such a degree that it cannot be visually recognized, personnel are to take care to ensure they keep track of its location.
3. See 'Special Containment Procedures'.
4. For full service record, including the successful reclassification of twenty-two anomalies from Keter to Safe, see Site-22 Personnel Archive.

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