Haven't seen a post for this anywhere else, but does anyone know anything about the object sticking out of the mountain in the middle of Coerthas?

While I haven't paid it much attention other than passing curiosity near launch, I happened to be looking at it while running to a FATE the other day and it looks like a significantly larger portion of it has been exposed.

Without many screenshots from earlier patches to use as a point of reference, I can't be 100% sure, but regardless of that, has anyone seen or heard any information/speculation on just what exactly it is?