Continuing the discussion from Github issue
https://github.com/Merec/DAoC-MapCreator/issues/5 :
So the whole "Hill" and Underground Keep is a single Nif or is it a collection of different Meshes ?
on the first rendering it looks like there was a Z-Fight between the underground cave with surrounding pit, and the above Hill Area... (judging from the shadows and the fact that we see underground fixture like entrance paths...)
Too bad the underground area is not mapped as terrain, and is just a big hole in the ground to receive the giant mesh...
This goes in the same category of problem as rendering Dungeons area (which are just NIF Meshes corridors snapped together in thin air), and adding texture to Meshes would be a big feature to write...
I'm not an artist so I can't help you in creating a nice bitmap replacement, but maybe you could try to filter some more NiNodes from the mesh you are rendering to get only the "Upper Part" of the Ellan Vannin, you will probably need to write a filter based on NiNodes Names supplementing filter by NiNodes Types (If I remember correctly you filter NIF Meshes to get only the displayable triangle patches, I used your project NIF importer extensively when working on a pathing project...)