"To my knowledge, this has always been a toll station, but the last time I crossed it, duergar occupied it. Before that it were ... orogs, drow, a beholder and its thralls, drow, an illithid, and duergar again. Unless I got the order wrong somewhere." She looks at the yathrin. "In any case, I doubt that these three derro are the only ones on the bridge. Then again, they are just derro ..."