Per 
Item #: SCP-5164
Object Class: -Safe- Euclid / Potential Keter
Special Containment Procedures: SCP-5164 is to be monitored at all times with Task Force Iota-13 ("Cavern Guardians") onsite at all times,
In the event of 5164-RB emerging from SCP-5164-A in a hostile state, all efforts are required to stop it from reaching the entrance of the cave, flamethrowers appear to drive it away the most efficiently. If 5164-RB reaches the entrance, all SCP subjects are to be monitored 24/7 for any breaches, and if one occurs while SCP-5164-RB is displaying suspicious activity it is to be reported to O5 Command and have lockdown engaged in all sites within a 100km radius until confirmation of 5164-RB successfully being recontained inside SCP-5164-B
Description: SCP-5164 is a small cave 3 metres tall and goes for about 10 metres before stopping to a small space that has 1 dark pathway that goes forth for about 3 metres. The pathway cannot be illuminated even when using torches and other light-emitting objects.
After reaching what should be 'the end' of the pathway anything passing through will be transported to a different dimension designated SCP-5164-A. Discovered inside SCP-5164-A is a male human age approx 32, which possesses multiple anomalous properties, it has been designated SCP-5164-RB.
Addendum 5164-D-A: Drone now referred to as 5164-D-A passes through the pathway, with audial and visual distortions coming from computer feed. 5164-D-A emerges at what seems to be a mountainous landscape between a desert and grassland in front of 5164-D-A is a flat clearing on a mountain where two unknown entities stand. One seems to be a male human, age approx 32, and what seems to be a Latin mythological dragon with black scales. The two appear to be engaging in complex conversations in English, the conversation goes as so:
Can you find it hard to believe the Foundation has already voted █ O5's off of the Council, how many more will they vote off? Although I wasn't a member of the Council I was a member of their very own Mobile Task Force, Alpha-1, the Red Right Hand.
[REST OF CONVERSATION HAS BEEN REDACTED BY ORDER OF THE O5 COUNCIL]
The human which will now be referred to as SCP-5164-RB spots 5164-D-A. SCP-5164-RB appears to possess anomalous properties as it floats up to 5164-D-A's camera it begins to speak:
"The motherfucking foundation! How the hell did you get into my world? Damnit you probably found my cave too, now fuck off or you will have some serious trouble. I know everything there is to know about you, don't think I won't breach your SCPs because I will and Earth will be destroyed."
SCP-5164-RB punches 5164-D-A's camera destroying it and all communications are ceased.
Addendum 5164-D-B: 5164-D-B passes through pathway again with audial and visual distortions through computer feed. SCP-5164-RB and the black dragon which will now be referred to as SCP-5164-BD is in the same location in another conversation except this time SCP-5164-RB immediately notices 5164-D-B. SCP-5164-RB floats up to 5164-D-B and speaks once again:
I guess you won't leave me alone won't you, I guess me being the commander of the Mobile Task Force Unit Alpha-1, yes that's right I am [REDACTED] and it seems you didn't listen to me, well you see here my good friend ████████ here I have all my anomalous powers, well say hello to 682; I'm pretty sure it's loose at Site-[REDACTED], how many times do I have to do this. STAY. THE. FUCK. AWAY FROM HERE.
SCP-5164-RB punches camera again, destroying it. All communications are ceased. SCP-682 is roaming around Site-[REDACTED]. Shortly later it is subdued and recontained.
Incident 5164-A: Drone passes through the pathway, instantly 5164-RB grabs 5164-D-C and points the camera to his face and speaks:
I guess you at the Foundation are so keen to go through here, very well, there is an entire continent to explore but you have made a motherfucking mistake coming here. Enjoy a fucking site-wide containment breach at Site-[REDACTED].
Site-[REDACTED] now seems to be the most vulnerable to breaches so upgraded security has been allocated.
SCP-5164-RB takes a pistol from its pocket and shoots 5164-D-C communications are lost. in the cave of SCP-5164, SCP-5164-RB is seen coming through the pathway, Task Force Iota-13 begins to gun it down with 2 members with flamethrowers where SCP-5164-RB retreats but returns about an hour later, Iota-13 attempts to gun SCP-5164-RB down but has no effect, multiple site-wide containment breaches occur shortly after SCP-5164-RB breaches containment, multiple SCP subjects from multiple sites in a 100km radius and all sites in that radius are locked down. All SCP subjects are recontained shortly after and SCP-5164-RB is returned to containment afterwards through multiple attempts, most were in vain.
SCP-5164 has been reclassified as Euclid / Potential Keter after multiple attempted and successful containment breaches.
Incident 5164-B:
About 10 months after the original incident, SCP-5164-RB breaches containment through SCP-5164-A, and flamethrowers are quickly used to engage it, slowly a few of them start failing although recently refuelled and maintained. SCP-5164-RB exits the cave and proceeds to fly towards Site-[REDACTED] after reaching gate-b of the site, searches the facility until it reaches SCP-682's containment chamber, it then turns around and willingly follows Task Force Unit Iota-13 back to its containment unit.
Although no new escape attempts have been made a great increase in suspicious activity including the number of SCP-682 breaches.
