Greetings!
While recently exploring out of bounds with the absolutely fantastic Better Photo Mode mod by Aether (cheers Aether), I discovered some really stunning, presumably unfinished areas in the Hall of Valor.
The areas are connected and form a rough crescent around the outside of the cave, with one path blocked off by rocks to the right, just after exiting the Hall Entryway (Eluvian area). Another pathway is behind an un-interactable door further in the cave, in The Hilt - Lower Balcony area. This door is up some steps and is barred, with a small treasure chest before the steps.
Additionally, the door with a deer head hanging on it in The Hilt - Archives and Storage (where you start some of Taash's quests) has a secret path behind it that leads down to a treasury and statue of Mythal, which is visible across a ledge next to the previous barred door area, opposite a bookcase.
Anyhow....
The entire hall is actually on a small Island surrounded by beautiful turquoise water, dotted with smaller islands, boats and a view of... giant grey warden statues holding up a ruined fort built on top of a giant rock platform! This formation is part of a much larger cliff, and there are even more giant warden statues lined up in the distance!
The area where the giant statues are clearly visible is just beyond the barred, un-interactable doorway I mentioned earlier. This door connects to a cave pathway that eventually leads to an open courtyard with a small, shaded bar up a flight of stairs! Along this path, before the courtyard is a balcony with two fancy chairs, looking over the arena.
From the bar courtyard, two other paths exist. One leads deeper underground, down more stairs, to a dead end with a suspicious stone doorframe, filled in with bricks.
The other path leads to another courtyard, presumably for combat training, with archery targets and dummies. The bricked-up doorframe mentioned above seems to have once connected to the lower part of this space. The training area is actually partially visible when standing inside and outside of the arena. From here there are stairs that lead up to a wooden path, the path blocked by rocks I mentioned earlier.
I assume these areas were once intended to be accessible, as they appear very polished, with striking views!
I am unsure how far things are into level editing at this stage, but nonetheless, I felt the need to share this, as I believe an absolutely fantastic mod could be made that makes these areas accessible.
Cheers!