3D model of the Ukraine terrain was created in Cinema 4D R23 based on a high-polygonal STL model.
The height was increased by 10 times, so that the relief did not seem very flat. You can adjust the height as you want.
UV-map in frontal projection was created for correct texture mapping. Textures can be edited in Photoshop and returned to Cinema 4D.
The built-in physical renderer in Cinema 4D was used to produce the images.