increase range of pixel-lighting on terrain?

I believe the solution to this is to adjust the base map distance (which you can set up in the terrain settings). Beyond this distance, the terrain is rendered using a single texture, which gives less detail but better performance - and it appears that this mode also does not support shadowing.

Ok, i already got a solution by myself: I simply made my model-size smaller, so i can get closer with the camera. This works fine for me, but if you know a way to solve this problem otherwise, feel free to post!