This is an old ruin high in the mountains, overrun by Grimm, and recently, White Fang Operatives.  However, some new horror has even the vicious terrorist/revolutionary group of Faunus a bit on edge.  It seems a rash of strange murders there have been cause for concern.  Murders so ghastly, that surely only a human or a Faunus would be capable of them.  

If you're on the good guy team, you may come here on missions or something to clear out Grimm or White Fang members.