Per 
Item#: SCP-XXXX
Object Class: Safe
Special Containment Procedures: SCP-XXXX is held within a 5x5 meter lead shielded containment chamber located at site ██. The chamber is to have no windows and only one entrance which is to remain locked via electromagnets at all times unless the proper authorisation for testing is granted.
Description: SCP-XXXX is an anomalous vaguely human sized entity of unknown shape and colour which appears to not require nourishment or water intake to survive. The entity is not hostile however is capable of movement, moving between different corners of its containment chamber in irregular intervals of time with no apparent reason for doing so. SCP-XXXX has the anomalous property of being completely physically indescribable as any and all individuals asked to describe the entity after viewing it either in writing or verbally find themselves unable to form an accurate description that makes sense to the listener in concordance with our reality. It isn’t that SCP-XXXX lacks a physical appearance or that individuals simply forget what the entity looked like after viewing it as individuals who have viewed SCP-XXXX either through a photograph or in person do report seeing something they are just unable to describe exactly what it was that they saw.
It is thus hypothesised that SCP-XXXX is an entity which originated from a completely different plane of existence to our own, one where the way matter is structured and moves is different and because this ‘alternate reality’ is as yet currently unobserved by any humans the inhabitants are physically indescribable.
Furthermore, individuals who remain within a 20 m radius of SCP-XXXX for any period of time longer than 60 minutes begin to experience strong auditory hallucinations. When asked to describe exactly what these individuals heard they were unable to, saying that it was like nothing they had ever heard before and that there was no other sound to compare it to. Fortunately, there do not appear to be any long term side effects to being exposed to SCP-XXXX and this effect does not seem to be able to pass through lead.
