rating: 0+x

Item #: SCP-XXXX

Object Class: Safe Euclid

Special Containment Procedures: Due to SCP-XXXX's immobile nature, it is contained at the location of discovery. Provisional Site-██ has been constructed around the anomaly, located twenty (20) km North of ██████, Maine under the guise of a non-anomalous fallout shelter. A Foundation presence is to be maintained at the site at all times to deter unwanted civilian intrusion.

Measurements of SCP-XXXX-1's downward expansion are to be taken every 24 hours. Any growth deviating from the expected 2.74mm daily is to be reported. Exploration of SCP-XXXX-3 chambers is permitted, and manned exploration is to be carried out by Class D personnel. Exploration of SCP-XXXX-04 is not permitted at this time. See addendum for details.

Investigation into POI-XXXX-003-5 is ongoing.

Description: SCP-XXXX is a massive underground complex accessed via a two meter wide wide opening in the floor of an abandoned concrete structure built into a small hill located twenty kilometers North of ██████, Maine. The non-anomalous structure holding SCP-XXXX is a square concrete bunker ten meters in length, and three meters in height, with a small corridor and airtight door connecting the chamber with the outside environment. No furnishings, utilities, or objects save for SCP-XXXX were present upon discovery.

SCP-XXXX was discovered on March 1st, 2003 after reports of a poorly made history museum in the forest surfaced. Media suppressed and amnestics distributed as necessary.

SCP-XXXX-1 designates the main elevator shaft within SCP-XXXX. The depth of SCP-XXXX-1, estimated to be 13.8 million km, indicates abnormal topology. Proposals to drill through the side to confirm the nature of the topological anomaly have not been approved at this time. SCP-XXXX-1 is built entirely out of typical Maine bedrock1, and forms a singular vertical tunnel.

SCP-XXXX-2 is a pulley operated elevator used for the purpose of travel within SCP-XXXX-1. SCP-XXXX-2 cannot be damaged by any means, and the power source is unknown. The speed of SCP-XXXX-2 varies with destination, with standard elevator speeds being observed for upper destinations, and speeds in excess of 300 km/s2 have been recorded for transportation to the lower destinations. Notably, no friction related heat or significant change in air currents is created by SCP-XXXX-2 during this process, and occupants of SCP-XXXX-2 are unharmed and describe travel as uneventful, if occasionally long. A number pad within SCP-XXXX-2 is used to specify destinations for transport. If an invalid chamber depth is entered, the elevator immediately travels to the closest chamber to the depth imputed.

SCP-XXXX-3 consists of an estimated eight hundred thousand irregularly spaced chambers located within SCP-XXXX-1, accessed via SCP-XXXX-2. Most chambers are styled similarly to mundane museum exhibits. Museum exhibit themed chambers are similar in appearance, with beige painted walls and wooden floors. The depth of each chamber is directly related to the time period covered, with each meter in additional depth corresponding to an additional year. Chambers which cover longer time periods are located in the center of the depth range corresponding to their respective time period. Unlike a typical museum, no cameras are present, presumably due to the sheer number of SCP-XXXX-3 instances.

Historical topics covered by SCP-XXXX-3 align to a mainstream historical perspective, and do not reflect any anomalous activity whatsoever. Because of the sheer quantity of SCP-XXXX-3 instances, the vast majority, especially those covering spans of time prior to human civilization, are small in size and mostly empty, save for a single plaque or display case or similar museum item.

Several chambers discovered diverge from typical SCP-XXXX-3 instances and act as administrative or utility chambers of varying nature. See log below for notable instances of SCP-XXXX-3. Exploration is by no means exhaustive, and many chambers have been skipped over.

Addendum: Examination of the bottom of SCP-XXXX-01 during the removal of the objects within revealed a metal hatch, the contents of which are now designated SCP-XXXX-04. See exploration log below for details.