If you are trying to make the terrain looks like it goes on forever, it kind of didn’t work.
To me it looks kind of obvious that the terrain stops there, or maybe it doesn’t.
The lighting is really good for the most part, except some areas.
The yellow arrow demonstrates how the lighting is dark, while the brown arrow represents the opposite.
The terrain with me looks unnatural with how smooth it is and all the sudden bumps. I have to agree with @StoryBased - while that is a good build, you’ve used too much detail on a small part of the map:
An article I think is very helpful: Building Optimisation | Tips and tricks!
Definitely useful if you’re using that much detail.