Per 
CAPTION-GOES-HERE
Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: A perimeter around each entrance found of SCP-#### is to be set (insert dimensions here) in front of and around. Anything hostile that happens to climb out of the entrance is to be terminated first and documented later. Anything deemed docile is permitted to be brought under surveillance and tested for (insert idea here). A minimum of five guards are to be stationed at the perimeter, and no one over level class 2 are to go inside of a entrance of SCP-####. If civilians encounter any of the currently found entrances and the perimeters around it, they are to be persuaded to leave the premises. Any attempts to cross into the perimeter or damage Foundation property is to be met with attempts to bring them into custody, and based on severity of attempts, either given amnestics and or be handed over to law enforcement for confinement. If civilians actually somehow manage to get past the perimeter and go inside of SCP-####, they are to be thought of as already deceased, and the perimeter is to be repaired. The identity of the civilian is to be learned, and a cover story must be made for their disappearance in the outside world. Currently, there are 6 entrances spread evenly across the globe. Any new entrance formed or found is to be reported.
Description: SCP-#### is an ever changing environment underground, usually in the form of cubical rooms that cross into each room. Each room are always exactly 26 by 26 by 26. The rooms rotate around at random intervals, and thus shift the course of what paths anyone may venture into. Each room usually does not have the same qualities, as in what may be contained within. For example, some rooms may be flooded for water, acid or other types of liquids, some may even be hospitable, as in there being vegetation growing in the rooms. Fruit and vegetables have been seen to be growing on shrubs from dirt that had been swept in, hypothetically from dirt and dust swept into the entrances. And then there are other environments, those that contain traps of some kind. For instance, one room that a D-Class was terminated in had some hydraulic press lining both wall and ceiling, crushing the D-Class. It is currently unknown how these traps were put into place, or if it was made by some of the current denizens of SCP-####.
Indeed, there are people in SCP-#### who have societies inside of it, though not all of them appear to be allied together. Some are nomadic tribes, some are hunter-gatherers, meanwhile there are certain tribes who appear to stay in one cubic room for as long as they possibly can. Tribes inside of SCP-#### may be either hostile or cooperative with personnel sent inside, though the people that at first were hostile with personnel quickly appear afraid once they were shown modern force via firearms. Tribe languages differ from tribe to tribe. The most modern tribes usually use English or other common languages of the world. More often than not though, it seems that they were speaking in a language not known, as if the people there had developed a new one. Of the tribes encountered, the most complex tech found among them were bolts belonging to old machinery from the Industrial Revolution, fountain pens and a circuit board that had copper stripped from it.
As one might expect, the fact that the rooms shift around makes it very difficult for anyone to leave SCP-####. The vast scope of how many rooms inside of it is nearly immeasurable, given that SCP-#### spans from continent to continent via the entrances. Any and all attempts to dig into SCP-#### has been met with failure, as there is no possible way to breach into the material. The machinations that make SCP-#### shift has not been found, there are no cogs or gears that make it turn on a surface level.
Addendum: [####-01: Under construction. ]
