Making terrain around roads look good

Does anybody have any tips for making terrain look more even with my road? I’m stuck in an endless cycle of using grow and erode to make it look good - I can’t seem to get rid of the holes beneath the road and the “hills” that I seemingly have to create to patch the holes.
Any advice is appreciated.


You should use the “flatten” tool (you can find it in the terrain editor) and configure it according to your use, just drag over the area you want to flatten and that’s it.