Awesome work on the automata! I particularly like the ships. The rock texture is also really nice. It's indeed very hard to find or make one that looks good at different zooms and detail levels, probably why so many take the shortcut of using the same texture for many zooms. Besides the actual cliffs there can be useful places for such textures in the higher altitudes, as well as especially "dry" or "wet" parts of a terrain mod though--and since there are lots of those, as opposed to one rock/cliff texture, repetition is less of an issue.