An old Terragen terrain was used for this image. Thanks to lightning for the ground cover (very small due to the POV). Also. 'tree22' was used - sorry, don't have the author on this one.
this is nice over all...but texturing needs little work...
and I think you will be able to imply the sense of scale if you put in more population in...
The shape of the terrain is pretty interesting, but the detail and scale needs a little work