Check this thread: https://forums.dovetailgames.com/th...hn-route-in-progress.76620/page-2#post-788892
However, I didn't manage to set the hole material in a way, that the landscape tile shows the correct painted materials or at least can be repainted appropriate yet. Anyway, the conversation stopped with Thomas because I was so happy setting up the Limburg tunnel and let the ICE pass through. Thereafter we had the discussion ending up with the SFS Köln/Frankfurt and the topic went by. I apologize for that. However, if you have further questions in the thread of my route about the hole material, I grant everyone to continue the hole material and tunnel discussion, if it isn't clutter up the thread too much and warrant me some place for my own posts as well. I mean I profit from these informations, too.