Despite being odorless and invisible to the naked eye, the presence of SCP-XXXX-1 can be perceived by the human host in a variety of other ways. Symptoms of SCP-XXXX-1 infection include but are not limited to:

High-concentrations of SCP-XXXX which manifest behind human hosts are collectively designated as SCP-XXXX-1. Only one instance of SCP-XXXX-1 has been observed to gestate on a human host at any given time. By consequence, instances of SCP-XXXX-1 behave as individual entities and interact and respond independently of other instances of SCP-XXXX-1. Individuals which act as a host to an SCP-XXXX-1 instance are said to have been 'infected' by an instance of SCP-XXXX-1. SCP-XXXX-1 are nebulous entities which can condense and expand to accommodate for the space behind a human host.

SCP-XXXX has a melting point of 0.56K and a boiling point of 3.09K at STP. SCP-XXXX is an odorless gas that cannot be perceived by the naked eye at any concentration or volume, however; SCP-XXXX is an opaque, black substance in both its solid and liquid form. SCP-XXXX has not been observed to perform chemical bonding with itself or any other elements. Despite this, SCP-XXXX naturally congregates around the backs of human subjects.

Description: SCP-XXXX is the designation given to element-12█ of the periodic table. Unlike any elements which precede it, SCP-XXXX is extremely stable - with no apparent half-life or any known isotopes. Since its discovery, SCP-XXXX has been found to not only exist naturally but also be exceedingly abundant in the Earth's atmosphere.

Special Containment Procedures: Due to its widespread nature, efforts in containing SCP-XXXX are ongoing. Areas with significant human populations are to be regularly surveyed for the presence of SCP-XXXX in the air. If concentrations exceeding 250ppm of SCP-XXXX are confirmed to be present, a large scale execution of procedure-XXXX-gunnister

Photograph taken by Mr. T█████ shortly before initial containment. Note the presence of SCP-2176-1

Item #: SCP-2176

Object Class: Euclid

Special Containment Procedures: SCP-2176 is to be isolated two-hundred-and-fifty (250) metres away from any open ground, and is to be situated one (1) kilometre north-east of its designated site. SCP-2176's containment chamber is to be a concrete chamber measuring two-hundred-and-fifty (250) metres x two (2) metres x by two-point-five (2.5) metres. SCP-2176 is to be placed on the far side of the chamber, no less than 5 (five) metres from the far-chamber wall. At least one (1) Level-3 clearance researcher must be present in SCP-2176's surveillance room should a transmission begin.

Description: SCP-2176 is a standard full-range loudspeaker measuring ten (10) centimetres in diameter and weighing two-hundred-and-fifty-one (251) grams. SCP-2176 is devoid of any wirings and markings which might indicate a manufacturer. SCP-2176 appears to show no sign of damage when subjected to any kind of force and therefore cannot be dissected for further visual examination.

SCP-2176's more anomalous characteristics become apparent when, at random intervals, SCP-2176 will emit a cacophonous audio-transmission measuring seventy-five (75) decibels at a distance of one (1) metre. The length of each transmission can last from ██ seconds to █ hours, and the duration between each transmission typically lasts from around █ days to █ weeks (See Addendum-2176-1 for a non-anomalous recording of transmission Incident-2176-12). During each transmission, an entity will materialize within a two-hundred-and-forty-three (243) metre radius of SCP-2176. This entity has been designated as SCP-2176-1.

The rocking chair described in Incident-Log 2176-1 shortly after incident.

SCP-2176-1 is a gaseous entity that is present during each transmission made by SCP-2176. SCP-2176-1's colour and size vary with each appearance but most cases, SCP-2176-1 is orange-red and is the approximate size of an adult human.

SCP-2176-1's behaviour varies with each manifestation, ranging from being completely docile to extremely aggressive. SCP-2176-1 also appears to express an interest in certain objects and will often respond to certain stimuli, although what these stimulants may be also varies with each transmission.

SCP-2176-1's composition also seems to be corrosive to weaker materials such as wood, plastics, and organic matter, meaning that SCP-2176-1 is extremely dangerous when hostile. It has been shown that SCP-2176-1 can easily pass through small openings and crevices in an object. SCP-2176-1 will de-materialize once the transmission has ended.

By altering the [REDACTED] of the transmission emitted by SCP-2176, a voice is made audible. From audio recordings, the tone of voice also seems to vary with different transmissions, although it is not confirmed whether or not this apparent tone is simply due to the limitations of the recording hardware used.

Addendum-2176-1:

Addendum-2176-2:

Below is a list of notable transmission incidents which have occurred during SCP-2176s study and containment.

+ Notable Incidents Log - Notable Incidents Log Incident Identification Context Observations 2176-1 The first incident report describes the first and only on-site encounter witnessed by foundation personnel of SCP-2176-1 after being called in by authorities to investigate the disappearance of Mr T██████ in his home in ███████, Wales. SCP-2176 was immediately moved into containment following the incident. Transmission began 14:56:21 on the ██-██-1971. Two (2) MTF personnel were inspecting SCP-2176 accompanied by police officer D████ F███████ within the area of effect when the transmission began. Officer D████ F███████ quickly fled the premises but was apprehended by MTF agents ███-█ and ███-█. MTF agent ███-█ reported seeing SCP-2176-1 slowly wander through the dining room of the residence from a window, mentioning its apparent interest in a rocking chair in positioned near the far-right corner of the room. MTF ███-█ continued to observe SCP-2176-1 engulf itself upon the chair up until the end of the transmission. Officer D████ F███████ was given a Class-A amnesiac before being released. 2176-15 This incident is notable for the initial identification of a voice present in SCP-2176's transmission, as well as its first observed attack upon a living creature; An elderly felis catus that had been placed in the containment area. Transmission began two (2) days, five (5) hours and fifty-five (55) minutes after initial set-up of the apparatus. SCP-2176-1 materialized two-hundred-and-forty (240) metres away from SCP-2176. Dr A████, who was assigned to SCP-2176 at the time, noted that SCP-2176 was speaking in an 'unintelligible language'. SCP-2176-1 initially displayed little interest in the specimen. Instead scanning the chamber walls idly. However, when SCP-2176-1 drifted above the feline it was caught in its mass and started sizzling. SCP-2176-1 went over to the feline once it started making noises, causing the specimen to be engulfed and destroyed. SCP-2176-1 stood motionless for the remainder of the transmission, with Dr A████ noting that the transmission's voice had deteriorated into a low pitched rumble. 2176-37 Incident 2176-37 is notable for being the first observed human fatality of SCP-2176-1. One (1) Class-D personnel had been placed behind a five (5) centimetre thick glass pane on the near-end of SCP-2176's containment area. Subject was a 23 year old Caucasian male. Transmission began five (2) days, twenty (20) hours and two (2) minutes after initial set-up. SCP-2176-1 materialized forty (40) metres away from SCP-2176. The Class-D subject, reported that SCP-2176-1 was staring 'intently' and 'blinking slowly' at him. Despite ensuring that the pane was sealed to the dimensions of the room, SCP-2176-1 was able to funnel its form through a small opening in the material. SCP-2176-1 backed away from the Class-D subject once he started screaming, but eventually it calmly engulfed the subject. The Class-D subject immediately began to cough violently and emein blood once SCP-2176-1 was upon him. SCP-2176-1 worked through the subject's skin within a few seconds and by the end of it's attack bone was visible on the subjects feet, fingers, forearms and jaw. Softer tissues such as the cartilage of the nose and ears, fingernails and eyeballs had been melted off completely. SCP-2176-1 then began violently banging at the chamber walls until the end of the transmission. Dr L█████ noted that the low rumbling voice that had been observed during prior transmissions had now changed into that of extreme agitation Dr L█████, a log of the recording can be found in Addendum-2176-3. 2176-74 Once again noteworthy for SCP-2176 apparent change of tone, this incident is also relevant for the breach of containment caused by the neglect of safety procedures in Site-██. SCP-2176's chamber was set up with a human mannequin and various balls made from a multitude of different materials ranging from sponge to iron. Transmission began four (4) days, two (2) hours and eleven (11) minutes after the initial set up of apparatus. SCP-2176-1 materialised two (2) metres away from SCP-2176. Dr L█████, who was on duty at the time, reported a similar pattern of speech as had been observed since incident-37. SCP-2176-1 glided low to the ground passed the set-up apparatus. SCP-2176-1 moved over to the near-end of the chamber and stared intently at the surveillance camera near the chamber door which was not unusual behaviour for SCP-2176-1 to perform according to Dr L█████. However, SCP-2176-1 quickly siphoned through the chamber door, which upon closer inspection, had not been properly sealed after setting up the experiment. Dr L█████ immediately sounded the site alarm as, according to eyewitnesses, SCP-2176-1 made its way over to its surveillance room 'quickly' and 'intently'. Dr L█████ was supposedly engulfed and killed by SCP-2176-1 in the surveillance room. SCP-2176-1 then idly wandered the site hallways for the rest of the transmission. Dr L█████'s body was recovered after the incident and staff protocol revised for SCP-2176's containment. 2176-███ [DATA EXPUNGED] [DATA EXPUNGED] 2176-███ [DATA EXPUNGED] [DATA EXPUNGED] 2176-███ [DATA EXPUNGED] [DATA EXPUNGED] No Persons Level-2 or lower are permitted to access the reports for incidents 2176-███, 2176-███ and 2176-███ due to their recent occurrence.

Addendum-2176-3:

Below is a series of notable interviews conducted by the foundation regarding SCP-2176. Each interview was conducted using an audio receiver and microphone placed one (1) metre away from SCP-2176. The audio emitted by SCP-2176 was then [REDACTED] so that the voice was audible. With the interview identification correlating directly to the identification of the incident.

+ Interview-2176-37 - Interview-2176-37 <Beginning of Recording> SCP-2176 Rumbles methodically throughout the first █:██ of the recording as had been observed for past transmissions, Dr L█████ can be heard cursing as the Class-D subject is engulfed. Dr L█████: Shit. Something's happening to the transmission, D█████, turn the volume up. SCP-2176 can be heard screaming SCP-2176: Liars. Liars. Dr L█████: Can you hear me? Please respond, my name is Doctor L█████, I'm not here to hurt you. SCP-2176: Bullshit. Fuck. You. You saw. You saw. You saw. It. Dr L█████: Saw what?



SCP-2176: The video. On the. Cameras. You saw. What happened. You did. This.



Dr L█████: Could you clarify? We're not too sure what 'we' did.



SCP-2176: Not we. Doctor. Doctor. Doctor L█████. You. You. Fuck you. Fuck you. Fuck you.



SCP-2176 repeats this phrase throughout the rest of the transmission, with Dr L█████ being unable to communicate with SCP-2176-1 <End of Recording>

+ Interview-2176-75 - Interview-2176-75 <Beginning of Recording> Dr T█████: This is Doctor T█████, 2176, if you can hear me, please respond. SCP-2176: Yes 2176. We're. We're here to. We're here to. Help. Dr T█████: What? You're 2176, the one we're talking to. SCP-2176: Why did you. Kill. Kill them. Dr T█████: I was about to ask the same thing to you. SCP-2176: Yes. It burned. It was burning. It's not. It's not burning now. Dr T█████: You're not making any sense, 2176. SCP-2176L You will burn. We all burn. Burning. Burning. Burning. Dr T█████: Could you please repe- 2176 audibly raises it's voice SCP-2176: I did. not. finish. I am here to. help. You will soon writhe. Heave. In this deluge. Of. Of agony. Much like. The ones before. You. You. When you. Murdered that man in. In cold. Burning. Blood. You promised. Promised him the safety of. The security of a useless window. And then your. Neglect. Costed you one of. Your own. Your own. Me. You killed. Me. Both SCP-2176 and Dr T█████ are silent SCP-2176: We will ensure that you join us. <End of Recording>

+ Interview-2176-1b - Interview-2176-1b The following is an interview conducted by Site Director-███ questioning Incident-2176-74 eyewitness Dr D█████ about what she saw <Beginning of interview> Site Director-███: All right Dr D█████, we need to file the incident report sufficiently, it's important for us to know what you saw. Dr D█████: Yeah, I understand. That thing's been fucking staring at me ever since we came back into the surveilla- Site Director-███: Just go ahead with your statement… Dr D█████: It was in heavy-security Sector-██, god knows what time it was, you guys probably know. I was transferring the files on [REDACTED] to storage unit-█ when the alarm sounded. Site Director-███: Yes, that was Doctor L█████, please continue. Dr D█████: It couldn't have been more than about ten second or so when it came around the corner, really fucking quickly too. It seemed like it was in a hurry, but I don't know. It was coming at me way too fast for me to run away so I just sort of braced, you know? Site Director-███: And it just flew past you? Dr D█████: No… Dr D█████ pauses for a moment Dr D█████: No it… I looked up, and it was staring at me. It only looked at me for a few seconds, then it flew past. Like it was trying to see who I was, and once it had done that, it just turned away. Then I made my way to the- Site Director-███: No need for anything else, Doctor D█████, that will be all Dr D█████: Uhm, all right. Where's Doctor L█████ now? I need for her to take some documents from me… Site Director-███: Thank you, Doctor D█████… <End of Interview>

Addendum 2176-4

+ Document 2176-1 - Document 2176-1 Dyma y ble fyddai'n marw. Mae'r syna ma wedi bod taro ar fy nghlustiau am wythnos rwan. Y peiriant bach na o gardd yr hen eglwys ydi o. Ond rwyf methu cael gwared ohono. Mae o pob tro 'nol ar y ddesg na yn yr ystafell gemâu pan yr wyn ei thaflu ffwrdd. Swn sgrechian ydi o. Canoedd dros ganoedd o ysbrydion yn sgrechian mewn poen. Poen llosgi, poen oerni. Poen gwaedlyd. Ma yna rywbeth tu allan, hefyd. Mae'r swn yn galw arno. Sgw ni ddim beth ydi o a ganddai ddim diddoreb o ffeidio allan, chwaith. Ond ganddai deimlad a dydi o ddim isio fy mrifo i. Sylwais arno yn sbio arnai neithiwr, a'r diwrnod cynt, trwyr ffenestr. Yn sbio yr un fordd y fyse mam yn edrych ar eu blant. Yn edrych trwyddai, gyda parch. Er hynny, dwi ddim eisiau cymryd siawns, dwi am gadael adref yfory, sgw ni ddim i ble, or rhywle digon pell o fyma, mae'n siwr… Rwyn ymddiheuro i bawb, ond ni allai adael i pawb weld fy nghorff yn gorwedd yn fy ngwely, wedi marw, fel a wnes i weld fy nhad yn siglo yn y gadair y blwyddyn cynt. Nos da i bawb.

We still need a translation of that note we found on site forty fucking years ago. If somebody could get around to doing that that would be great. -Dr Gordon