SCP FOUNDATION — INCIDENT REPORT
Incident Designation: C‑4‑203
Codename: “Howling Corridor”
Involved Unit: Mobile Task Force Cerberus‑4 “Hellgate Breakers”
Location: Site‑██, East Research Wing — Acoustic Containment Sector
Date: ██/██/20██
Clearance Required: Level 4/Hostile‑Entity Response
Summary
At 02:51 hours, Site‑██ experienced a sudden acoustic containment breach originating from SCP‑███, an anomaly capable of generating weaponized sound waves exceeding 180 dB. The breach propagated through the East Research Wing, causing structural resonance, personnel disorientation, and multiple casualties.
MTF Cerberus‑4 was deployed to halt the anomaly’s advance, stabilize the corridor, and re‑establish containment under extreme auditory hazard conditions.
Pre‑Incident Conditions
SCP‑███ exhibited elevated agitation during routine testing.
Acoustic dampening plates showed signs of stress fracturing.
Two researchers reported “persistent whispering” in the corridor.
Maintenance request for plate replacement was pending approval.
Timeline of Events
02:51 — Initial Breach
SCP‑███ emits a sustained resonance howl, shattering dampening plates.
Corridor lights flicker and fail due to vibration overload.
Personnel within 20 meters experience immediate hearing damage.
02:54 — Cerberus‑4 Deployment
Pack Leader Argus authorizes rapid breach entry.
Ashdogs Shade & Echo deploy acoustic mapping drones.
Wardens Grim & Harrow prepare suppression equipment.
02:56 — Corridor Distortion
Drones detect non‑linear geometry forming within the corridor.
Sound waves create localized pressure pockets capable of crushing bone.
Shade reports: “The hallway is folding in on itself.”
02:58 — Entity Manifestation
SCP‑███ appears as a shifting silhouette composed of vibrating air, producing intermittent howls.
Sound pressure ruptures nearby pipes; steam obscures visibility.
Talon suffers temporary disorientation and collapses.
03:00 — Engagement
Warden Harrow deploys Resonance‑Breaker Charges.
Charges detonate, briefly stabilizing corridor geometry.
SCP‑███ emits a counter‑howl, shattering two charges mid‑deployment.
03:02 — Hellbinding Attempt
Hellbinder Vex activates multi‑phase acoustic restraints.
Restraints anchor SCP‑███ to three stable points in the corridor.
SCP‑███ emits a high‑frequency scream; restraints begin to vibrate violently.
03:04 — Secondary Breach
Corridor walls begin collapsing inward due to resonance feedback.
Echo rescues two incapacitated researchers.
Argus orders full neutralization protocol.
03:06 — Neutralization
Grim deploys the experimental Silence Engine, generating a localized null‑sound field.
SCP‑███ destabilizes, collapsing into inert particulate matter.
Corridor geometry returns to baseline within 30 seconds.
03:10 — Area Secured
Cerberus‑4 establishes perimeter.
Surviving personnel evacuated.
SCP‑███ reclassified as Contained pending further study.
Casualties
Foundation Personnel
7 injured (hearing trauma, disorientation)
2 deceased (structural collapse)
Cerberus‑4
Talon — severe auditory trauma
Echo — minor injuries
No fatalities
Damage Assessment
East Research Wing corridor partially collapsed.
Acoustic dampening systems destroyed.
Estimated reconstruction cost: ██ million USD.
Multiple research labs rendered inoperable.
Post‑Incident Notes
“Sound shouldn’t bend hallways. Whatever SCP‑███ is becoming, it’s learning.”— Site Director ███████
Addendum C‑4‑203‑A: Acoustic Residue
Residual particulate matter recovered from SCP‑███ shows vibrational memory, retaining faint echoes of the anomaly’s final howl.
Addendum C‑4‑203‑B: Cerberus‑4 Debrief
Cerberus‑4 personnel reported:
“Voices inside the resonance.”
“Something was speaking through the howl.”
“The corridor wasn’t just distorted — it was listening.”
Investigation pending.