You turn the corner and see another long hall, very similar to the one you just went through. There appears to be a door at the end of the hallway.
As you get about halfway down the hall, you start to see remnants of a faded mural depicting battle between several humanoids, but you can’t make out much more than that. There are several sections that have been scribbled over and defaced.
The new inhabitants of this dungeon have basically graffitied the mural. There is nothing else of interest in this hallway. The door at the end of the hallway is ornate.