@adrian2301 Thanks, Adrian 😀! I’m also convinced that @spikeyxxx will have an excellent explanation 😀! Meanwhile, I’ve done some tests. I can achieve the same result with just one “Mapping Node” by setting the “Mapping Type” to “Texture” instead of “Point” so that it’s the texture instead of the texture coordinate system that is scaled. I just have to select a high enough “Y-Scale” so that the fog tunnel runs through the whole fog volume:
