**Title: SCP-3XXX — **
| Item Number: SCP-3XXX | Level 3/3XXX |
| Object Class: Safe | Classified |
SCP-3XXX in its containment vat with tentilla extended, photographed by Researcher Nasim. The cable connecting SCP-3XXX to the Deep Brain Stimulation system is obscured by the entity.
Notice: The original containment procedures of SCP-3XXX are unknown. Containment specialists have assessed the conditions of its pre-existing containment chamber and included its details below.
Special Containment Procedures: SCP-3XXX is contained in a 4,000 L Class-4 Lovell-Huron cryogenic suspension vat, cooled with liquid nitrogen. To facilitate the health of SCP-3XXX, sodium nitrite solutions and trehalose disaccharide have been included in the vat's fluid mixture, reducing the entity's desiccation. A temperature of −196 °C is to be maintained within the vat at all times.
The vat and SCP-3XXX are connected to a Deep Brain Stimulation (DBS) system, which is installed into the entity's nerve net. A constant voltage of 8 V is supplied to the system by an electrical generator of unknown construction, resembling hypothetical designs for a miniaturized cold fusion reactor. If repairs need to made to the generator, blueprints for the cold fusion reactor design are to be used as a reference.
Potential candidates for oneironautic expeditions into 3XXX-β must meet have a Cognitive Resistance Values (CRV) of 12.4 or higher, a resistance against oneiric entities, and proficiency in lucid dreaming.
The entity will continue to be stored in the now-defunct Sub-Basement 12 of Site-82. The connection between SCP-3XXX and Oneiroi "Wasteland Collective" dreamscapes is considered a high-priority area of research by Research Team 3XXX.
Description: SCP-3XXX is soft-bodied cydippid1 entity of unknown origin, which possesses sapience and oneironautic capabilities2. The entity is 80 cm long and has a mass of 16 kg, possessing a body like that of non-anomalous cydippid organisms. Two retractable tentilla are used for maneuvering its surroundings.
The Deep Brain Stimulation system is a collection of anomalous telepathic and psionic materials assembled into electronic devices, built into the cryogenic suspension vat, which enables direct mind-to-mind connection between SCP-3XXX and an intended third-party observer (designated 3XXX-α). The system links to SCP-3XXX with a cable that embeds into its nerve net3. Despite the nerve net's differences from mammalian and avian nervous systems, nervous activity mirrors that found in REM sleep; the cryogenic suspension is presumably intended to maintain this state.
3XXX-α can link by attaching a set of 20 electrodes to their skull, then by being placed into a medically induced deep sleep. When this is achieved data on SCP-3XXX's dream state is transmitted into 3XXX-α and vice versa via an intermediate computer database4, causing 3XXX-α to enter the entity's dream in a state of high lucidity.
All dream states held by SCP-3XXX involve a dreamscape hereafter referred to as 3XXX-β. 3XXX-β takes the appearance of a large cityscape, built in the deep sea, which has been abandoned for an indeterminate period of time. Much of the buildings in the area are heavily damaged, though the cause of this damage is not known. The dream avatar of SCP-3XXX is a metallic humanoid entity known as "Nacelle," whose head is a Boeing 707 engine. While 3XXX-α is in 3XXX-β, Nacelle is seen to have an umbilical cord extend from its abdominal region and constrict around the neck of 3XXX-α's dream avatar. 3XXX-α will remain within 3XXX-β and will be able to communicate with SCP-3XXX until the medically induced deep sleep ends.
Notable similarities exist between 3XXX-β and a "Wasteland Collective" encountered by individuals that interact with the Oneiroi group of interest. The locales of this collective take the form of cities with little to no inhabitants, despite the necessity for Oneiroi collectives to have dreaming entities sustaining the existence of the dreamscapes. Although experiences of dreamscapes can be highly subjective, the layout and structure of each wasteland collective city are consistent across all encounters, additionally mirroring the appearance of 3XXX-β. Further investigation is needed to ascertain what connection exists.
Discovery: The means by which SCP-3XXX came into Foundation custody are unknown. Site-82's maintenance team discovered SCP-3XXX in the decommissioned Sub-Basement 12 during a routine site inspection sweep on 10/4/2021, its vat and electrical generator in a state of minor disrepair. Based on the construction of the anomaly's containment chamber, it is believed that SCP-3XXX was contained between 1999 and 2002, though both the DBS system and generator are more advanced than Foundation technology had been at the time.
The original documentation of SCP-3XXX was not found on any internal Foundation networks5, instead being found in a heavily corrupted state on a flash drive within Sub-Basement 12. Aside from limited details on containment procedures, no other legible information was recovered from the drive.
Sub-Basement 12 was decommissioned in 2013. As the last edit to the flash drive file was made in 2013, a potential connection between the decomissioning and a loss of knowledge on SCP-3XXX is considered likely. Whether this involved a form of antimemetic anomaly is not yet known.
Addendum.1: 3XXX-β Dream Logs 1-3
Addendum.2: Recovered SCP-3XXX Information
Continued oneironautic expeditions and investigations into Sub-Basement 12 has led to an accumulation of further information on the anomaly. This is available below.
Recently, debate has arisen over the hypothesis that the loss of knowledge on SCP-3XXX was the result of antimemetic anomaly. Researcher Hans Achterberg initially proposed that an antimemetic effect had been generated in 2013 from undetermined causes, which has gradually lessened in strength until portions of information could be perceived in 2021, possibly declining further over time. However, tests with mnestics have yielded no new discoveries in recovered documentation or Sub-Basement 12, suggestion that a non-antimemetic cause existed. The presence of Oneiroi West subnet posts regarding Wasteland Collectives further conflicts with the hypothesis, though the connection of SCP-3XXX to the Collectives and whether oneiric entities can be affected by antimemes are yet determined.
Research is ongoing.
Addendum.3: 3XXX-β Exploration Logs 4-#
DREAM LOG 4
Personnel: D-2074
Date: 2/5/2021
< BEGIN LOG >
Addendum.4: Incident 3XXX-2/1
New additions have been made to the file.
Addendum.5 displayed below.
Addendum.5: SCP-3XXX-3
[stuff on SCP-3XXX-3 attacking (w/ something from omicron-rho)]














