The Symbiotic Tunnel

Item #: SCP-XXXX

Object Class: Euclid Safe

Special Containment Procedures: The entrance to SCP-XXXX is to be continuously monitored via remote camera for the duration of D-CLASS TEST. Personnel assigned to SCP-XXXX are to operate from an off-site facility located in ██████ ███ to avoid drawing attention to the tunnel system. If civilians are observed investigating SCP-XXXX, security personnel should be sent to disperse anyone present and administer amnestics. In the event that any test subject currently involved in D-CLASS TEST emerges from SCP-XXXX, they are to be detained in the off-site facility. After administering a thorough examination to the recovered test subject, Research personnel must determine if it is necessary to continue or terminate D-CLASS TEST.

Following the conclusion of D-CLASS TEST, the entrance to SCP-XXXX has been sealed with concrete. Motion-activated cameras observing the entrance to SCP-XXXX are to remain active as a precaution, and any captured footage is to be uploaded to servers at Site-11 and may be occasionally examined to ensure the concrete seal has not been tampered with. It is no longer necessary to maintain a facility nearby and exclusively dedicated to SCP-XXXX.

Description: SCP-XXXX Is a network underground tunnels located ██ Kilometers to the East of ███████ Lake in the Upper Peninsula of Michigan. The entrance to SCP-XXXX can be accessed via a roadside ditch near the intersection of ██████████ Road and ████. The tunnels that make up SCP-XXXX are circular, measure 2.5 Meters in diameter, and are made of concrete. SCP-XXXX resembles a typical storm drain, but it does not connect to the surface at any location except its entrance. The tunnel system contains multiple junctions and branches, and continuously descends deeper underground as its passages lead farther away from the entrance.

The source of SCP-XXXX's anomalous effect can be found at its deepest point: a flooded dead-end at a depth of about 75 Meters below the surface. When SCP-XXXX is inhabited, corpses of rats, mice, and other small rodents will regularly surface in the flooded area as a means of sustaining the tunnels' residents. Upon consuming the morsels provided by SCP-XXXX, inhabitants become subject to its anomalous effect, and are drawn into a symbiotic relationship with the tunnels. Individuals under the influence of SCP-XXXX demonstrate a fanatical desire to protect the tunnel system from intruders, and will regularly perform acts of self-mutilation for the benefit of SCP-XXXX in exchange for its continued supply of food. Residents of SCP-XXXX quickly become dependent on it, and will adamantly refuse to cease their relationship with it.

Prior to Foundation involvement in 2003, SCP-XXXX had been inhabited for over three years by a group of six locals. Following the emergence of Subject XXXX/A from the tunnel entrance on ██/7/2003, A mission to recover the remaining individuals within SCP-XXXX was attempted by MTF SQUAD, which resulted in the termination of all residents (See addendum- MTF recovery log). Subject XXXX/A is currently in foundation custody, and has proved useful in documenting the anomalous effect of SCP-XXXX (See addendum- survivor interview).

Addendum:

+ Addendum XXXX.1: MTF Recovery Log

The following document contains entries from the personal journal of MTF SQUAD Captain Fitzgerald. These entries were made shortly after MTF SQUAD's deployment to SCP-XXXX, and have been selected to document the early stages of SCP-XXXX's containment.

July 22, 2003: ██████ ███, Michigan

We arrived here in Michigan in the early afternoon today. Wasn't too long of a trip from Site-11. They've got us set up in this little town on Lake Superior. It's right on the shore, and hardly anyone lives here. I guess that's a good thing, we won't have to work so hard to keep our business a secret. The research team brought one of those mobile offices, the kind you see at construction sites, and they've got it set up down the road, just outside of town. The SCP we're supposed to be working on is apparently only a Kilometer or so away. Normally we'd be concerned about working so close to a town, but if you go about a hundred meters inland, you get into some real thick forest, and absolutely nobody lives in there. We got sent out here on a pretty short notice and so far I've got no idea what we're gonna be working on. Our job tomorrow is to head down the road to where the SCP is supposed to be and do some setup. Hopefully I'll be able to get an idea of what we're dealing with.

July 23, 2003: ██████ ███, Michigan

The team got up early today, made our way down to the temporary facility where the research team is while the locals were still asleep. I was excited to get started with a new job, like I always am, but I can't say I wasn't disappointed when they told us what we'd be working on. The SCP is a tunnel complex in the forest to the West, and the entrance is in a little ditch by the side of the road. Our job was to head down there and set up some cameras at the entrance so they can sit around and watch it all day.

MTF recovery log: documents setup of cameras, emergence of subject, attempt to recover survivors. Image of emerging subject

+ Addendum XXXX.2: Interview With XXXX/A

survivor interview: further interview of subject regarding conditions and anomalous affect of XXXX. Image of hand-drawn map

+ Addendum XXXX.3: D-Class Experiment Journal

D-class test log: Log of testing within XXXX by D-class believed to be resistant to the effect of XXXX, results in sealing of tunnel