It is not used, but it exists in the original UO game: I created it using UO landscaper version 1.5, just need to edit xml files and add non-existent mountains.
First image: In the original game, images of mountains other than usual - eg around Papua - are used.
More Images: ID art pictures are used in Fire Island on map1.mul. Volcano.
Here is a small sample of my edits to UOLandscaper v. 1.05. I'm still working on it, many edit xml files. But it seems better. In the near future I would like to share my edits to UOLandscaper. Perhaps the author will not be angry.