Note: You have to make sure that the resolution of your terrain, its fluctuation scale and building dimensions are all comparable. Otherwise, on a high-resolution, rapidly varying terrain, you will have buildings whose bottoms are in contact with the terrain only at a few points and parts of them hang in the air.
[[File:prop_adjust1_tn.png|400px]] [[File:prop_adjust2_tn.png|400px]]
Figure: A Scene with Buildings and Terrain Before and After Adjusting Elevation
=== Transmitters & Receivers Above An Irregular Terrain ===