Per 
SCP-6013
Item: SCP-6013
Threat Level: Specific
Object Class: Safe Thaumiel
Special Containment Procedures: It is in a room, in Site-19
Description:
It is a 5x5x5 structure, this size can change sometimes, but most of the time it's just that, is usually gray and shiny.
It's indestructible, it may change it's amount of sides or change color at random. It can be used to contain other SCPS, but we are not going to do that, as we are still testing 6013, the Box may regenerate after having a piece of it removed, it regenerates in about a few seconds, it cannot be cut from the inside.
When you are inside 6013 you appear to be smaller, and when you get near a exit you will gradually grow in size.
6013's anomalous properties makes it specifically dangerous, see Addendum-6013-1 for better understanding.
If you are inside SCP-6013 you will feel like it is a 20x20x20 room, but it's only 5x5x5, you only become smaller inside the SCP, this has been tested in Experiment Log-6013-2.
Experiment Log-6013-1:
D-class was locked inside and was told to try and cut the box with a kitchen knife, nothing happened after he did it, interesting. For more info see Addendum-6013-A.
Found at:
A park in [DATA EXPUNGED], in ██ of ████ at 2004.
ONLY LEVEL 4 CLEARENCE OR HIGHER SHOULD ACCESS THIS
DO NOT GO FURTHER
THIS IS A WARNING
THIS IS ONLY FOR 4+ CLEARENCE PERSONEL
STOP IGNORING THE MESSAGES
STOP NOW
DO NOT GO THROUGH
YOU HAVE BEEN WARNED
DO NOT PROCEED
DO NOT GO FURTHER
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS DENIED
ACCESS ALLOWED
Addendum-6013-1:
The same D-class from Experiment Log-6013-A was then allowed out of SCP-6013, but, when we cut the Box to get the D-class out, the D-class was too slow, and the D-class [DATA EXPUNGED].
Experiment Log-6013-21
Another D-class was put in 6013. Recorded log below.
Umm, ok this place is HUGE,
it's like, um, i don't know, i can't really explain, it's just, like…
Gigantic, it's gray, i can see the walls and corners but i can't get to them…( The wall was cut )
Holy ████, THIS DOCTOR IS HUGE,
wait a minute… Why is everything huge now? I guess I'm gonna leave?
Ok so I think I was small instead,
because I am feeling like I'm growing as I get near the exit,
( The Device was stopped. )
The D-class then left 6013
