The information in this article applies to:
I have added Hills and Valleys to my terrain. I have rebuilt my terrain, but the Hills and Valleys are still not visible in my plan.
If Hills and Valleys are drawn in the same area as a Flat Region, the Flat Region will take priority over the Hills and Valleys, and the Hills and Valleys will not be visible.
There are a few of ways to address this conflict.
Remember that whenever a change is made to the terrain in floor plan view, you must select Terrain> Build Terrain from the menu to apply the changes you have made to the drawing. If you have a camera view open, then the terrain will automatically rebuild.