**Item #:** SCP-9418
**Object Class:** Keter
**Special Containment Procedures:** SCP-9418 instances are to be monitored continuously via Foundation orbital surveillance satellites and high-altitude automated reconnaissance drones. Exactly three (3) active instances exist simultaneously, designated SCP-9418-1, SCP-9418-2, and SCP-9418-3 based on their specific anomalous destination.
Upon detection of a newly manifesting SCP-9418 instance, the nearest regional Mobile Task Force is to deploy immediately to establish a 1-kilometer exclusion perimeter. Because a newly manifesting instance initially spawns fully floating mid-air, containment teams must deploy immediate physical barriers to block public visibility and prevent civilian interaction (specifically children or trespassers attempting to jump or climb toward the structure).
When a new instance begins manifesting elsewhere, a randomly selected existing instance will begin a slow de-manifestation process. Containment teams are strictly forbidden from abandoning a de-manifesting site until the first (1st) step completely disappears. Field teams must maintain perimeter control throughout the entire disintegration process while secondary tracking units locate the newly floating instance.
All personnel assigned to SCP-9418 sites are strictly forbidden from making physical skin contact with any textual engravings carved into the structures without remote handling equipment.
**Description:** SCP-9418 designates three (3) freestanding, fully enclosed stairwells containing exactly fifteen (15) steps set at a 45-degree angle. Each instance is encased within high-walled corridors of the same material, preventing occupants from falling off the sides during ascent.
SCP-9518 is composed entirely of a solid, non-hollow anomalous metallic alloy. Standard physical testing demonstrates absolute structural integrity; instances are completely immune to physical kinetic force, extreme thermal exposure, and explosive force up to high-yield nuclear detonations. Any minor surface abrasion rapidly regenerates within seconds—with the sole exception of deliberate textual engravings carved into the alloy at the base of each instance. Cross-sectional observation during de-manifestation confirms the alloy is completely solid through its entire structure.
There are strictly two (2) separate methods of triggering the anomalous lethal effects of an SCP-9418 instance:
1. **Ascending to the Apex Step:** Climbing the staircase and stepping onto whichever step currently serves as the highest remaining point triggers execution of the primary anomalous effect.
2. **Direct Contact with Inscriptions:** A Latin phrase is deeply carved into the alloy at the base of each staircase. Direct physical contact with these carved letters triggers an accelerated, amplified version of that specific instance's primary anomalous effect.
The three instances are categorized permanently by their specific effect:
* **SCP-9418-1:**
* **Inscription:** Reads *"To the core of the Earth"* in Latin. Touching these carved letters instantly forcibly extracts all oxygen from the subject's lungs before teleporting them directly into the center of the Earth's solid inner core, fusing them permanently into the metal.
* **Ascension Effect:** Stepping on the apex step (step 15 during normal state, or steps 14 through 1 during de-manifestation) instantaneously teleports the subject deep within the Earth's liquid outer core. Subjects experience immediate extreme thermal destruction and asphyxiation due to sub-surface pressure and liquid metal exposure.
* **SCP-9418-2:**
* **Inscription:** Reads *"To deep space"* in Latin. Touching these carved letters instantly forces all air and oxygen out of the subject's lungs simultaneously with displacement into deep space within the Andromeda Galaxy (M31), causing immediate explosive decompression and vacuum death.
* **Ascension Effect:** Stepping on the apex step (step 15 during normal state, or steps 14 through 1 during de-manifestation) instantly displaces the subject into deep space within the Andromeda Galaxy (M31), resulting in asphyxiation and exposure to hard vacuum.
* **SCP-9418-3:**
* **Inscription:** Reads *"Disintegration"* in Latin. Touching these carved letters instantly triggers immediate, non-rhythmic, and exceptionally painful atomic disintegration of the subject's entire mass in less than one second, dispersing their protons and neutrons into deep space toward the unmapped black hole.
* **Ascension Effect:** Reaching the apex step (step 15 during normal state, or steps 14 through 1 during de-manifestation) initiates a slow, highly rhythmic atomic deconstruction process starting at the subject's feet and progressing upward to the head. The body is forcibly decomposed into constituent protons and neutrons. Biological consciousness and pain reception remain fully active throughout the entire process despite the complete destruction of vital organs (including heart and lungs). No blood loss occurs. Protons and neutrons vanish from local space-time and re-emerge in deep space, encircling or collapsing into the event horizon of an unmapped supermassive black hole.
**Manifestation & De-manifestation Cycle:**
When a new manifestation event occurs, a **random** existing instance begins a top-down de-manifestation process starting from the 15th step.
* **Progressive Trigger Transference:** As upper steps dissolve, the anomalous effect dynamically transfers down the structure. If step 15 has dissolved, step 14 becomes the trigger point. If step 14 dissolves, step 13 becomes the trigger, continuing all the way down through steps 12, 11, 10... down to step 1. Stepping on the highest active remaining step at any point in this cycle activates the instance's full anomalous effect.
* **Solid Alloy Construction:** Cross-sectional views of dissolving steps confirm that the anomalous alloy is entirely solid throughout, featuring no hollow interior.
Simultaneously, the replacing instance begins manifesting in a new location globally. Newly forming instances spawn completely levitating in mid-air above ground level before settling, posing a critical civilian discovery risk due to the tendency of bystanders and children to approach or jump toward floating structures.
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**Addendum 9418.1: Imaging Hazard Protocol**
All attempts to capture optical photographs, video footage, or digital imagery of SCP-9418 instances have resulted in complete equipment loss.
When a camera lens or sensor array is pointed directly at an active SCP-9418 instance and attempts to capture an image, the photographic device itself instantaneously triggers the active sub-instance's anomalous effect:
* **SCP-9418-1 Imaging Attempt:** The recording device is instantly teleported deep into the Earth's solid inner core, destroying all circuitry and data.
* **SCP-9418
* 9418-2 Imaging Attempt:** The camera is instantly displaced into deep space within the Andromeda Galaxy, venting internal electrical pressure and freezing instantly in hard vacuum.
* **SCP-9418-3 Imaging Attempt:** The optical sensors and internal components of the camera undergo immediate, complete atomic disintegration into free protons and neutrons.
Consequently, no verified photographic or video records of SCP-9418 exist within Foundation archives. Containment personnel are strictly instructed to rely exclusively on satellite distance surveillance and laser-range telemetry.
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**Addendum 9418.2: Discovery Log**
SCP-XXXX was initially discovered on ██/██/████ at ██:██ local time near the town of [REDACTED], located in [REDACTED]. Local law enforcement had flagged a sudden spike in missing persons investigations, with over twenty (20) residents vanishing without a trace within a single calendar month.
A local search-and-rescue team dispatched into the surrounding dense forestry reported finding an anomalous, pristine metallic stairwell structure extending into the sky with no supporting architecture. Initial civilian response teams climbed the steps to inspect the anomaly, resulting in the immediate disappearance of three (3) rescue officers.
Foundation web-crawlers flagged the incident after local radio dispatches reported officers vanishing at the top of the staircase. Mobile Task Force Zeta-9 ("Mole Rats") was deployed to secure the site. Class-A amnestics were administered to all surviving search party members and local law enforcement personnel, and a cover story regarding a localized sinkhole hazard was established to account for the missing civilians.
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**Addendum 9418.3: Cross-Test Log [SCP-682](https://scp-wiki.wikidot.com/scp-682)**
**Test Leader:** Dr. ████████
**Subject:** [SCP-682](https://scp-wiki.wikidot.com/scp-682)
**Purpose:** To assess the effectiveness of SCP-9418's primary spatial displacement and atomic deconstruction mechanisms as potential termination methods for [SCP-682](https://scp-wiki.wikidot.com/scp-682).
##### **Test 1: SCP-9418-1 (Earth Core Teleportation)**
* **Procedure:** SCP-682 was mechanically forced onto the apex step of SCP-9418-1 via heavy automated hydraulic restraints. Upon contact with the apex step, SCP-682 instantly de-manifested. Seismic sensors detected a localized high-density mass surge within the Earth's outer liquid core.
* **Results:** Containment personnel monitored the base of SCP-9418-1 for 48 hours. At T+51 hours, significant seismic tremors were recorded beneath the staircase footprint. SCP-682 breached the earth directly adjacent to the base step, having crawled back to the surface through approximately 2,900 kilometers of molten iron and mantle rock. The mechanism by which SCP-682 survived core pressure and heat remains unknown; post-incident examination revealed its outer hide had adapted into an ultra-dense, non-conductive crystalline heat sink. SCP-682 immediately engaged security personnel, resulting in four (4) casualties before being re-contained.
##### **Test 2: SCP-9418-2 (Deep Space Displacement)**
* **Procedure:** SCP-682 was airlifted and positioned on the apex step of SCP-9418-2. Instantaneous spatial displacement occurred as expected, sending the entity into deep space within the Andromeda Galaxy (M31). Long-range spatial tracking arrays lost signal immediately upon displacement.
* **Results:** At exactly 2 days, 7 hours, 6 minutes, and 58 seconds following displacement, an anomalous spatial distortion manifested 10 meters directly above the apex step of SCP-9418-2. SCP-682 plummeted from the distortion onto the upper corridor walls. During its time in deep space, SCP-682 had adapted a biological vacuum seal, zero-gravity reaction-mass vents, and high-density radiation shields. Upon re-entry, SCP-682 lunged off the staircase before perimeter guards could react, resulting in the immediate termination of two (2) attending researchers assigned to SCP-9418-2 prior to MTF suppression.
##### **Test 3: SCP-9418-3 (Atomic Disintegration)**
* **Procedure:** SCP-682 was restrained via automated crane arms and lowered onto the apex step of SCP-9418-3. Rhythmic atomic deconstruction initiated at its lower appendages, systematically reducing its biological mass into loose protons and neutrons.
* **Results:** SCP-682 underwent total atomic deconstruction. Biological sensors confirmed 100% of the entity's physical body was successfully broken down into constituent protons and neutrons, which vanished from local space-time toward the unmapped deep-space black hole. However, exactly 12 hours after total disintegration, an anomaly occurred: a single proton originating from SCP-682 was detected re-emerging at the base of SCP-9418-3. Upon re-entering local space, this single proton began rapidly duplicating matter at an exponential rate, completely reconstructing SCP-682's original biological form within three (3) minutes. The entity emerged fully conscious and regenerated, exhibiting total immunity to subatomic decay. It immediately breached containment, resulting in multiple personnel casualties before being suppressed.
*Dr. ████████'s Note: Further cross-testing of SCP-682 with any sub-instance of SCP-9418 is indefinitely suspended. SCP-682 has demonstrated the ability to adapt to extreme thermal core conditions, deep space vacuum, and complete atomic deconstruction, using as little as a single surviving proton to trigger full regeneration.*
