Very good, sufficiently weird, I don't fully get it but that's okay.
Couple minor nitpicks:
Foundation archeological digs are planned in the vicinity of SCP-4841 for mid-2020.
Might wanna move that date back or just make it "near future" or something, unless you're planning to update this next year.
Any depiction of a human figure brought into SCP-4841 will, after an indeterminate period of time beneath one hour, begin to anomalously generate blood around the eyes and wrists in the painting
It says "Depiction" but then only talks about paintings afterwards. What about statues, photographs, etc?