It's a really nice layout of the LOD boundaries. Could be helpful during scenery design, I think? (Humor for Umberto!)
Somewhere you have changed one of the land detail files for FSX. Then for some reason unknown to me, people zoom out really, really far and say this looks strange, wonder why? If you don't like the looks when zoomed out really, really far change back to the default file. Sorry, I don't recall which one it is. Guess you'll have to go search the Flight1 forums for that answer, as there was a recent (last month or so?) thread about the same thing. Please don't go and start a new thread for what is an old problem that's been addressed many times, at all different forums. And you could apologize to Umberto for suggesting there's a "bug" with his products. There isn't, this is something you have introduced to your FSX installation. If there was said "bug", don't you think there would be many, many posting about this "bug"?
Couple of questions. Why do you zoom out so far? And how does it look at what normal people consider to be the view sight, like 10,000 or 30,000 feet?