Item #: SCP-354
Object Class: Keter
Special Containment Procedures: The area surrounding SCP-354 has been cordoned under the cover of a Canadian federal environmental protection zone. A perimeter of 2 km radius is maintained. Automated defense systems are operational at 500m, 250m, and 100m rings. A minimum of one armed response team of twelve agents must be stationed at the forward base at all times. All entities that emerge from SCP-354 are to be neutralized by any means necessary. Neutralization takes priority over capture.
This priority has been revised upward four times since initial containment was established.
Description: SCP-354 is a pool of deep red liquid located in a remote area of northern British Columbia, approximately 140 km from the nearest town. The liquid's chemical composition is similar to human blood but is not genetically human and does not match any known biological profile. Attempts to reduce or drain the pool have been unsuccessful. Volume does not decrease regardless of extraction rate.
The pool's primary anomalous property is emergence. At irregular intervals — ranging from six hours to several weeks — entities emerge from SCP-354. These entities are collectively designated SCP-354-A through SCP-354-AN, with new designations assigned as new types emerge.
No two entity types have been identical. They range in scale from SCP-354-A (a small, humanoid figure, approximately 90 cm, with no facial features and a body temperature of 0°C) to SCP-354-W (a mass approximately 40 meters in diameter that required aerial neutralization and three hours of engagement). All entities have demonstrated hostility toward humans. All entities have been neutralized, though not without Foundation losses.
The source of the entities — what lies beneath the pool — is not known. Remote imaging reveals only red liquid to a depth of approximately 30 meters, at which point imaging returns corrupted data. Aquatic exploration has been attempted twice. The first drone malfunctioned at 28 meters. The second drone returned, intact, after sixteen hours, transmitting footage from its descent followed by 14 hours of static and then seven seconds of footage that has been classified at O5 level.
Three researchers who reviewed the seven-second clip are on indefinite medical leave. They have described it, in independent sessions, as "something that hasn't happened yet" and "a room I have been in but not built."
The pool is always red. The pool is always warm. The pool has not stopped producing entities in the eleven years since its discovery.
Addendum 354-7: Following the emergence of SCP-354-AK, which breached the 100m perimeter and reached the forward base before neutralization, the Foundation has authorized escalation to Keter. The chief researcher's note reads: "We are not containing this. We are managing our losses. These are not the same thing. I recommend the O5 Council be made aware of the distinction."
The O5 Council has acknowledged receipt.
The pool is still red. Something is still moving in it, just below the threshold of imaging. It has been moving since we arrived. It will be moving after we leave.