I wandered to the location of this doorway, I was curious for I knew of no metal door. It's rather close to Neo Rousseau's old home, perhaps he knew of it, but I had never seen it before. It's in a small series of tunnels and I found an old dusty skeleton, so it can't be a brand new thing. I hope it's not another Portal, we are just getting settled in Tir'an with our refugees and would be pressed if more came. I don't think I explored all the tunells, but if any wish to I advise bringing triptyte, its very dark in there.