Per 
Item #: SCP-XXXX
Object Class: Keter
Special Containment Procedures: SCP-XXXX itself is uncontainable due to the nature of this SCP. The different anomalous entities it introduces, however, have varying degrees of containability. Unfortunately, prolonged containment of these entities is almost impossible due to the unique circumstances and challenges the SCP Foundation are presented with in regard to this anomalous object. Area XX has been constructed inside of SCP-XXXX at the approval of the 05 Council with the goal of preventing foreign entities from entering, or terminating them if they manage to enter SCP-XXXX.
Description: SCP-XXXX is a modestly decorated hallway that is theorized to exist in a parallel universe, pocket dimension, multidimensional space or some combination of the aforementioned possibilities. The floor of the hallway is 7.45 meters wide and consists of an unknown pitch black material that is impervious to damage by conventional methods. The floor stretches seemingly indefinitely down the hallway up to and beyond the limits of human sight. Laying on top of the floor is a carpet 6.97 meters wide of royal purple coloration. The walls of the hallway are 5.33 meters in height and a pitch white variation of the indestructible floor material. Pillars of a Grecian design with a radius of 0.45 meters are halfway embedded into the walls and spaced at regular intervals of 4.62 meters from each other, extending upwards into the edges of the ceiling. The ceiling reaches a maximum height of 14.34 meters and is composed of the same white material of the walls. It is smoothly vaulted and undecorated.
At the near end of the hallway exists four (4) identical doors, each with dimensions of 1.70 x 3.64 meters. The doors are plain, emerald green and vaulted in a similar manner to the roof. Each of the doors correspond to a destination. From the perspective of the hallway, the doors are to be referred to as SCP-XXXX-1 through SCP-XXXX-4 from left to right. SCP-XXXX-1 links to extra-dimensional space with natural conditions that are unsuitable for Earth's biological life (see Log A), SCP-XXXX-2 links to an inhospitable and unknown alien planet within which a plethora of eldritch horrors reside, SCP-XXXX-3 links to a world that is extremely similar to earth, but most likely from a parallel universe, and SCP-XXXX-4 links to our earth.
Entrance and exit from SCP-XXXX is only possible through one of the four (4) doors
