SCP-354 is a pool of red liquid discovered in northern Canada. The liquid is of a consistency similar to that of human blood (hence the colloquial name Blood Pond) but is not of a biological nature. The pool does not have definite banks; soil mixes with the liquid until, at a certain point, there is more soil than liquid and the ground is mostly solid. The liquid becomes denser as one descends deeper into the pool; if the pool has a bottom, it has yet to be reached.
Periodically, entities emerge from the pool and attempt to escape from the enclosure. Thus far, nearly all creatures emerging from SCP-354 have been extremely hostile and highly dangerous.
SCP-354-2: Bear-sized mammalian creature covered in razor-sharp spines. Resembled an echidna. Was virtually bulletproof, but was unable to escape the enclosure surrounding the pool. Neutralized via napalm.