Is this a Terragen render? I think it`s very good with nice colours and tones and a nice scape. Terragen was the one of the first cg apps I ever used and keep meaning to have another play with it. I think this has inspired me. Nice work.
Don't know much about this type of work, but this seems to be done fairly well. The downside of it is that there isn't anything in it to grab my attention, it seems rather drab to me.
I love this one, mostly because it reminds me of an area in New Mexico, near Ship Rock. . .which is a volcanic plug. This one has a realistic quality to it that I find lacking in many renders. Nice work.
Ian :)