Thanks, Jeff. This really helps a lot.

Hello, forum! I have been trying to create a 3D block of terrain from imported GE locations. I start by importing the location from GE, then I start surrounding it with rectangles to enclose it, and intersect these perpendicular faces with the terrain geometry to allow me to delete the portion of the wall that I don't need. This process should allow me to encapsulate the terrain in a 3D block below the surface. The problem is that SketchUp won't allow me surround it on all sides, since some of the intersections don't work. I would appreciate some pointers if you have any, and I have uploaded some photos demonstrating the method I'm using.

Thanks!