Ultima Underworld: Halls of the Vale
Produced by: Mike Mann
Many years ago, Mike Mann got the idea to put together a Neverwinter Nights module that would have combined the dungeon-crawling aspects of the Ultima Underworld games with the top-down 3D viewpoint offered by NWN. The reason it is listed on the Ultima 8 subdomain is that its story would have been based upon what had then been known about The Lost Vale, the never-released expansion pack for Pagan.
All that remains of the project is this image, which the good Mr. Mann posted to the Ultima Dragons Facebook group: