* Right click on the '''Terrain''' item in the Navigation Tree and select '''Insert New Terrain...''' A dialog for setting up the terrain properties opens up offering a of preloaded material type (Rock) with predefined green color and no texture.
* Specify a name for the terrain group and select a color or texture.
* Similar to other blocks, you have to specify the material properties, Permittivity (eε<sub>r</sub>) and Electric Conductivity (sσ), of the terrain group. Rock with eε<sub>r</sub> = 5 and s σ = 0.005S005 S/m is the default material choice for a new terrain.
* Click the '''OK''' button of the dialog to accept the changes and close it.