Ok, after extensive testing with several different textures in the game, I truly believe that Skyrim does not support parallax maps for textures other than on the glaciers. I have tried saving the parallax textures with all sorts of names ending with things like "parallax, _p, _parallax" but nothing has gotten a result. Am I doing something wrong or does the game not support it? And if not, is there someone who can perhaps edit the shaders in the game to support parallax mapping? Also, has anyone figured out how this "subsurface" effect works? And if its possible to utilize its effects for other textures?