Per 
Nickname: The Echoing hallways
Item#:** XXXX
Object Class: Keter
Description:
SCP-XXXX is a dimension that does not seem to be accessible outside of going inside SCP-XXXX-01. When an instance of SCP-XXXX-A, B, or C enters SCP-XXXX, they will be found in exactly 24 hours in their bed, unless they have been changed to an instance of SCP-XXXX-F. Note: a list of all instances of SCP-XXXX-F are awaiting declassification, the first 4 instances are listed in Addendum XXXX-F.
SCP-XXXX-01: is a manilla envelope, upon first glance, the only odd feature of SCP-XXXX-01 is the size, it is 2 feet by 2 feet. If anyone attempts to destroy SCP-XXXX-01, it will teleport to where that person picked it up. If anyone drops SCP-XXXX-01, it will teleport to where that person picked it up. SCP-XXXX-01 weighs absolutely nothing, if it is placed on any scale, even a scale that will show 10000000000000000 decimal points, it will always show exactly 0 lbs or any other form of weight will be 0.
SCP-XXXX-A is a member of foundation personnel that knows of the existence of SCP-XXXX. SCP-XXXX-A will always act oddly. One example happened on the date of [redacted], Researcher [redacted] signed his name on the kotnom-A sheet(see addendum Kotnom-A) as [name has been expunged and replaced with “John Doe” for this example] “JJoohhnn DDooee”. When Researcher Doe was asked about this he insisted that he spelled it correctly. He was detained until noon-thirty that day. However, if SCP-XXXX-A is not discovered and/or is not detained, they will be taken to SCP-XXXX by an instance of SCP-XXXX-F. If SCP-XXXX-A escapes then there will not be an instance of SCP-XXXX-B, however, the instance of SCP-XXXX-A will appear in their bed at the same time that SCP-XXXX-B will be taken. If SCP-XXXX-A does not reappear, they are to be designated as an instance of SCP-XXXX-F, unless SCP-XXXX-B goes into SCP-XXXX, then if one escapes, both might escape.
SCP-XXXX-B is a member of foundation personnel that is told of SCP-XXXX’s existence. If no one is told about SCP-XXXX’s existence before the time they would be taken, SCP-XXXX-A will not escape SCP-XXXX, and must now be designated as an instance of SCP-XXXX-F. However, the upside to taking this action is that there is no SCP-XXXX-B this cycle. If SCP-XXXX-B is detained successfully until noon-thirty, and SCP-XXXX-A does not appear in their bed, then SCP-XXXX-B will have 5 minutes to go into SCP-XXXX to possibly save SCP-XXXX-A. However, if SCP-XXXX-A does not re-appear, and SCP-XXXX-B goes into SCP-XXXX, there may be an instance of SCP-XXXX-C this cycle. See Addendum Kotnom-B for more in-depth information about this process.
SCP-XXXX-C is a child, this child can be anywhere in the world, the only limitation is the age, must be between 5 and 15. There is currently no guaranteed way of successfully detaining these children. However, they will always have SCP-XXXX-01 in their backpack when they go home. When they get home, they will call the closest foundation front. They will always say, “Kotnom-C has failed again suckers, my address is [insert their address here].” They will immediately be taken by SCP-XXXX-01 into SCP-XXXX. SCP-XXXX-C will always escape and be designated as SCP-XXXX-S, see addendum SCP-XXXX-S, only the first 3 instances of SCP-XXXX-S have been declassified by the ethics committee. If SCP-XXXX-A was a good person, they will re-appear in their bed at the same time as SCP-XXXX-C, and if SCP-XXXX-B was a good person, they will also re-appear at the same time. All instances of SCP-XXXX-A and B who escape will be returned to their jobs, SCP-XXXX-A will remember everything, but cannot be taken into SCP-XXXX ever again, and SCP-XXXX-B will forget everything, and cannot be taken again as well.
Special Containment Procedures:
This SCP itself cannot be contained, but the effects can be contained, and even neutralized cycle by cycle by using Kotnom A-C. Mobile task force unit [redacted] will be used to execute Kotnom A-C. Everyone on this task force is either an instance of SCP-XXXX-S or an instance of SCP-XXXX-A or B that escaped. (All instances of SCP-XXXX-B that escaped are debriefed, jogging their memory of the events, and then given a choice of Amnestics, joining the task force, or being promoted to the 05-council (if a slot is open).
Note: if no one knows about SCP-XXXX, it will take from people who have already escaped.
Discovery:
Awaiting declassification…
Addendums:
Addendum XXXX-F:
If an instance of SCP-XXXX-A or B are taken and do not escape, they are transformed into an anomalous object that is similar to the last SCP that person was researching. These anomalous objects seemingly live inside SCP-XXXX, they will help those who enter. Declassified instances of SCP-XXXX-F:
SCP-XXXX-173: A peanut that acts like SCP-173. It is unknown who this used to be.
SCP-XXXX-035: A mask that looks like a mask from the Shy guys from the Super Mario Series.
SCP-XXXX-096: A Nintendo Amiibo of a shy guy from the Super Mario Series. When SCP-XXXX-096 appeared, SCP-XXXX-035 moved so that it is always on its face. This amiibo can move off of its pedestal if its mask is ever removed, it will start to scream, sounding like a shy guy from, and throw turnips non-stop.
SCP-XXXX-106: An old man, about the size of SCP-XXXX-096, made seemingly out of tar, calls himself Larry and likes to ride skateboards.
The rest is still awaiting declassification.
Addendum XXXX-S:
SCP-XXXX-C will change classification to SCP-XXXX-S once they escape SCP-XXXX. All reported instances of SCP-XXXX-C have escaped SCP-XXXX. All instances of SCP-XXXX-S are reported to have anomalous abilities. All examples are awaiting declassification by the ethics committee.
Addendum SCP-XXXX, Kotnom A:
Kotnom A is the procedure done by Mobile Task Force unit [redacted] whenever an instance of SCP-XXXX-A is redesignated as SCP-XXXX-F or escapes SCP-XXXX. Only 05-2 knows of the existence of SCP-XXXX. If SCP-XXXX-A, Once 05-2 escapes SCP-XXXX, they are given the choice by the Mobile Task Force Unit, to either join their unit or have their memories wiped of SCP-XXXX so they are not a danger to the rest of the 05-council, either way, a new 05-2 is elected.
Addendum SCP-XXXX, Kotnom B:
Kotnom B is the procedure done by the Mobile Task Force unit [redacted] on the dates listed in Addendum XXXX dates, under the “B” Column. The MTF unit will promote a head researcher based on their: past; skill; and boredness levels. They must have been nice people in their past in order for the least amount of risk, they must be fairly skillful, but someone they can afford to join the Mobile Task Force, and if they are bored with their current job, then they will have a higher likelihood of joining the Mobile Task Force.
Addendum SCP-XXXX, Kotnom C:
As stated in the special containment procedures and description, there is currently no way of guaranteeing the detainment of SCP-XXXX-C before they are taken. So Kotnom C focuses on containing them and using amnestics on friends and family after they become SCP-XXXX-S.
Addendum XXXX dates:
As of right now, the foundation is only aware of 4 times when SCP-XXXX becomes active each year. New Year's Eve, Easter's eve, the day before 05-2's birthday, and Christmas Eve. All remaining information is awaiting declassification.
