Can you get in here?

Second playthrough of the dlc and I find this place in belurat. It's got the same openable doors (at least visually) that are seen a couple of other places in this castle, open windows with what looks like a rendered interior, but I cannot for the life of me find a way in/up. I've scowered the entire sewer area, and I think most of the rest of belurat leading to the stagefront site of grace, I've even watched a couple walkthoughs and don't see it mentioned. Is it just an unused area or am I missing something?