Archived image of non-anomalous SCP-XXXX.

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX-2 instances are to be contained individually. Instances smaller than 25 cm in dimensions are to be stored in movement-restrained 25 cm x 25 cm x 25 cm standard strongboxes. Instances larger than 25 cm in any dimension must be stored in individual containment cells, and restrained with form-fitting kinetic restraints. Restraints must be inspected weekly, and be repaired or replaced as needed.

SCP-XXXX-1 is to be contained in a 50 m x 12 m x 5 m concrete containment chamber, rated to consistently withstand kinetic impacts of at least 800 kJ on the exterior without structural damage. A safe perimeter must be maintained around the containment area, to ensure that no steel objects come within 100 m of it.

Description: SCP-XXXX is the collective designation for the disassembled remains of "Dora", a heavy artillery railway gun originally built by Krupp in 1941 to be used by the Wehrmacht. SCP-XXXX was discovered in its current disassembled state by a Foundation archaeological survey, in temporary containment inside an abandoned underground bunker complex (designated Loc-XXXX-A) approximately 15 km west of Berlin.

SCP-XXXX-2 is the collective designation of 3752 individual components of SCP-XXXX. These components range in size from nuts and rivets to large sections of chassis and superstructure measuring 11 m x 5 m x 3.5 m in size. According to Foundation estimates, up to 1000 additional instances may be unaccounted for, as the set in containment is not enough to fully reconstruct SCP-XXXX. SCP-XXXX-2 are capable of autonomous movement and levitation, and motion at observed speeds of up to 233 km/h. The motion is affected by atmospheric drag, as larger, less aerodynamic instances move at comparatively lower velocities.

When not restrained, SCP-XXXX-2 constantly attempt to move towards other SCP-XXXX-2 instances, or SCP-XXXX-1 . When encountering physical barriers, they will attempt to use their kinetic energy to break through. When restrained, they consistently impart a force on the restraints, proportional to their individual mass. All instances have proven to be impervious to any attempts to physically damage them, and they do not incur physical damage from impacts caused by their own motion. They are also partially resistant to thermal or chemical damage, but regenerate any damage within a period of less than 5 hours. It is theorized that this effect prevents the components from being rusted or worn, despite their age and composition.

SCP-XXXX-1 is the gun barrel of SCP-XXXX, measuring 32.5 m in length. It is in a severely damaged state, with a large breach across its midsection and several additional missing sections along its length. Unlike SCP-XXXX-2 instances, SCP-XXXX-1 is immobile. Instead, it exhibits an effect approximately 100 m in radius around itself. Any object made from iron or steel entering the region of this effect is instantly broken into pieces no larger than 30 mm in diameter, and the resultant pieces experience rapid acceleration towards SCP-XXXX-1 . Controlled testing has shown that if these projectiles are allowed to reach SCP-XXXX-1, they seamlessly fuse with it, with the effect of gradually repairing the damaged portions of the barrel. At acquisition, SCP-XXXX-1 was damaged to an estimated degree of 27%; currently it is 19.6% damaged by volume.

Self-Assembly Test XXXX-01, ██/07/1993: Objects: SCP-XXXX-2-615, railway wheel; SCP-XXXX-2-562, wheel axle. Conditions: The objects were brought in a restrained condition into configured test chamber and released simultaneously, 10 m apart, with no barrier between them. Results: The objects immediately accelerate towards each other and assemble 0.7 seconds after release. The assembly becomes inert, coming to rest on the floor. After 13.5 seconds, the assembly resumes activity and starts repeatedly impacting the north wall. Assembly successfully restrained by automated kinetic restraint system, but could no longer be separated into its original components.

Assembly reclassified as SCP-XXXX-2-562. SCP-XXXX-2-615 designation left blank. No further assembly tests are permitted.