Item #: SCP-9663
Object Class: Euclid
Special Containment Procedures: A 1-kilometer radius containment zone around SCP-9663 is to be cordoned off behind a heavy-duty barbed wire fence. A single gate to this fence is to be constructed, with a gatehouse staffed by six rangers, hired by Foundation assets within South African National Parks (SANParks) as Level 0 personnel and informed that the fence protects a scientifically valuable but potentially invasive tree population. Every day, the entire perimeter of the fence is to be inspected for damage, and repairs are to be made as needed. The stationed rangers are also to monitor any new growth of SCP-9663 stems, and prune growth outside of the original extent of the anomaly.
Any individuals found within the containment zone without authorization are to be amnesticized and returned to the entrance of South Africa's Kruger National Park. Any rangers that see SCP-9663 endemics will be interviewed and amnesticized if necessary.
A segment of SCP-9663.
Description: SCP-9663 is an anomalous Vachellia erioloba (camelthorn tree), located within South Africa's Kruger National Park. Unlike other instances of this species, the anomaly takes the form of a clonal colony,1 and forms a single multi-stem tree which covers an area of at least 6.2 hectares within the park, with the appearance of a dense wood of unique individual trees.
SCP-9663's roots are capable of breaching into other worlds through an unknown mechanism. As such, the full size of the anomaly is unknown, though the earliest possible origin for the camelthorn acacia and the observed growth rate indicate a maximum size of 10,000 km2. Some sections of the colony may have been separated from the main body, making it impossible to determine its full extent. Only a small fraction of the worlds the anomaly extends to are known to the Foundation, and much of this information has been gathered from interrogations and intercepted communications of the Foundation's enemies.
SCP-9663 domatia on fresh twig, not yet colonized by SCP-9663-1.
As with other specimens of the camelthorn acacia, SCP-9663 produces swollen-thorn domatia to house mutualistic ant colonies, collectively classified as SCP-9663-1. Unlike other colonies of their species, SCP-9663-1 colonies not only defend SCP-9663 against herbivores, but also attack competing plants, pollinate the individual trees which comprise the anomaly,2 and travel far from the tree to hunt for prey.
All known SCP-9663-1 colonies display two properties not commonly found in ants associated with plants. Firstly, they are all supercolonies; in over two hundred hours of exploration into SCP-9663, ants of the same species have never been observed to fight each other. Different SCP-9663-1 species have been observed on rare occasions to go to war over resources, particularly on worlds with unusually resource-poor conditions, but such interactions are rare. SCP-9663 appears to have many different niches for ant species, limiting competition between them.
Secondly, all SCP-9663-1 instances make extensive use of tunnels that follow alongside the path of SCP-9663's roots, even otherwise arboreal species. These tunnels are capable of breaching into other worlds just as the roots of SCP-9663 are. It is unknown if this is a property of SCP-9663 or SCP-9663-1. Aside from these two properties, SCP-9663-1 species have not been observed to have any other unusual traits, and under laboratory conditions no SCP-9663-1 instances have been observed to construct such tunnels.
In addition to ants, many myrmecophiles3 are only found associated with SCP-9663 and use the tunnels to pass between worlds. Each group of species observed has been given a subcategorization under SCP-9663, categorized in Addendum 9663-2. The most commonly observed groups are mites, beetles, and threadsnakes. However, these myrmecophiles are extremely taxonomically diverse, including two species of bird, several species of killifish, an entirely endemic genus of spiders, and many extrauniversal taxa not similar to any Earthly form of life. None of these myrmecophiles have any documented anomalous traits.
The age of SCP-9663 is not known with certainty. No preserved remains of the trees or any associated organisms have been located, so radiometric dating is not possible. Rock art, dated to the 1st millenium CE and attributed to the San people, has been found in the area, including paintings depicting black clouds emerging from the trees to envelop humanoid figures holding axes, potentially representing instances of ant swarms attacking attempted tree fellers. Other paintings have been found with depictions of creatures unlike those found in any other San art, including six- and ten-limbed animals, suggesting that the San may have encountered life from other worlds which traveled through the anomaly.
The oldest historical records of the anomaly come from 1867 and were written by the Dutch botanist Ruud Abels. Abels noted the size and exact position of the anomaly, but did not realize its true nature and believed it to be nothing but an unusually dense grove of acacia. As far as the Foundation has been able to determine, no other entities or organizations have determined the true nature of the anomaly.
Initial Discovery: SCP-9663 first came to the Foundation's attention in 2011, following reports of impossibly-large swarms of ants attacking safari goers in Kruger National Park. Interviews with the guides and tourists indicated that the attacks began following an accident in which a safari jeep collided with a camelthorn tree (now identified as a part of the anomaly), felling it. According to all reports, within a few minutes of the tree's felling, large numbers of winged ants began swarming the area, biting and stinging all present. The group was able to escape by running approximately half a mile away from the anomaly, a distance at which the attacks ceased.
Initial surveys of the site established the presence of several species of ants undescribed by science, all of which were found to be traveling using tunnels constructed around and within the root system of the tree. The felled tree itself was found to have numerous swollen-thorn domatia, inhabited by three distinct undescribed species of ants. The site was quarantined and all non-Foundation parties amnesticized, and investigation of the anomaly commenced shortly thereafter.
This preliminary investigation revealed the existence of extensive tunnel systems alongside the anomaly's roots, with an average diameter of 22 cm. Initial boroscopy was unable to determine the extent of the tunnels, but did confirm the presence of anomalous mycorrhizal symbionts among the tree roots. A research team was dispatched to investigate further.
Addendum 9663-1: Structure
Currently mapped higher-order structure of SCP-9663. Note that <1% of known tunnels have been explored. Suffices and prefixes are omitted from labels.
SCP-9663 forms a higher-dimensional structure through its breaches into numerous other dimensions, exoplanets, and branes,4 alongside more esoteric forms of alternate realities, all collectively referred to as "worlds". Some of these worlds were previously known to the Foundation or other Groups of Interest (GoIs), while others were only identified during exploration of the anomaly; nonetheless, the connection to numerous known alternate worlds obviated their classification as a part of SCP-9663.
Connections between component worlds are mediated by the roots of SCP-9663, with higher-density clusters of roots developing around worlds with high concentrations of natural resources, connecting them to a greater number of other worlds. This is theorized to be an emergent structure of the anomaly, rather than an anomalous characteristic, as similar patterns have been observed in non-anomalous colonial organisms such as slime molds. Earth, despite being the presumed origin of the anomaly, has a relatively low number of connections when compared to other discovered worlds, suggesting that the anomaly is substantially more widespread elsewhere.
While conditions on worlds with SCP-9663 instances vary dramatically, no world has yet been found which does not meet the following criteria:
- Atmospheric carbon dioxide (CO2) concentration between 100 and 1000 parts per million (ppm).
- Atmospheric nitrogen (N2) concentration between 67% and 83%.
- Atmospheric oxygen (O2) concentration between 10% and 30%.
- Annual rainfall between 150 and 1000 mm/year-equivalent.5
- Average temperature between 9 °C and 22 °C.
- Gravity between .5 and 1.5 g (4.9 and 14.7 m/s2).
- Day length of between 6 and 36 hours.
Addendum 9663-2: Ecology
The ecological community associated with SCP-9663 is characterized by high endemicism, widespread fossorial adaptations, and multiple coexisting biota.6 While the section of the anomaly on any given world is mostly inhabited by indigenous species, an average of 30% of lifeforms do not originate from the world in question. On Earth, this percentage is smaller, at 15%; this is likely due to the anomaly originating from Earth.
Most species endemic to SCP-9663 are widely distributed across the multi-world structure of anomaly (see attached logs at the end of this addendum). There are few geographic barriers to migration and the climate is similar across all of the Wood. However, there are some exceptions. For example, annual killifish of the genus Nothobranchius (SCP-9663-2) are adapted to heavy seasonal monsoon cycles. During most of the year, their eggs are desiccated but hatch soon after temporary pools form following the rains. Floods have washed their eggs through the ant tunnels and spread them to other worlds, but many of the worlds connected to Earth through SCP-9663 do not have the same monsoon cycle as Kruger National Park. These worlds have acted as a barrier to their expansion, even to worlds with the appropriate seasonal cycles. The patterns of distribution of the SCP-9663-2 as well as certain other endemic species have allowed Foundation biogeographers to more accurately map out SCP-9663 than if the only sources of information were boroscope and snakebot logs.
Despite the presence of many non-native species, invasive events that can be attributed to SCP-9663 are few. SCP-████ and SCP-████ may be invasives that traveled to Earth using the anomaly, and many species have colonized W-EL-5A68T-SH/F/FDGH by traveling through the anomaly's tunnel system. However, in general the ability to disperse through SCP-9663 seems to make species poorer competitors. Foundation ecologists hypothesize that this is because of the well-known trade-off between generalist and specialist species. Species that range throughout much of the anomaly are hypergeneralists. They must be able to adapt to dramatically changing diel patterns, atmospheric compositions, microbiomes, and environmental toxins, among other factors. Ecological modeling indicates that single isolated populations of SCP-9663 endemics, with no outside immigration and an inability to access resources from other worlds, would quickly go extinct. In comparison, even generalists that are restricted to one world are specialized for that world.
Partial Log of Discovered Species:- SCP-9663-1-7: Pollinator Ant
- SCP-9663-1-9: Camelthorn Harvester Ant
- SCP-9663-1-15: Camelthorn Driver Ant
- SCP-9663-1-27: Lily Ant
- SCP-9663-2: Annual Killifish
- SCP-9663-3: Extremophile Mycorrhizal Symbionts
- SCP-9663-5-1: Blood Lily
- SCP-9663-6-2: Sheengrass
- SCP-9663-12-2: Green-Winged Bee Eater
- SCP-9663-18-1: Red-Sided Batwing
- SCP-9663-42-1: Golden-Throated Tunneler
Pollinator ants gathering nectar.
Common Name: Pollinator ant
Scientific Name: Crematogaster anthophilus
World of Origin: Earth
Notes: Feeds on flower petals, nectar, and pollen, the latter of which tends to stick to it and be transferred to other flowers. Main pollinator of SCP-9663 flowers, but often found on other species. Appears to require a wide range of species for optimal nutrition and so is highly mobile, moving between worlds as well as plants. This ensures high genetic connectivity for endemic plants.
Exploration Logs:
On 7/15/2011, Commander John Mercer of MTF Tau-9 ("Bookworms") requested that testing be conducted on using SCP-786 in conjunction with SCP-9663 to insert teams of Tau-9 operatives into worlds with Serpent's Hand activity. This request was approved by O5-3. Given the sensitive nature of this testing, Dr. Dlamini and his team were reassigned to investigate other anomalies, with shifts in budgetary priorities being given as a cover story.15 Due to scheduling conflicts and other ongoing investigations, MTF Tau-9 was unable to begin testing until 6/15/2016.
Following this incident, MTF Tau-9 ceased all investigation into using SCP-9663 as a method of investigating Serpent's Hand activity across alternate worlds. Exploration of W-L37RK using Mamba-model snakebots is ongoing, with the goal being the recovery of the three MIA Tau-9 operatives.






