They didn't exist, but now they do; the Black Mountains. With buzzards/hawks of course. Actually I had a nicer landscape, but that involved a lot of displacement intersection, and it didn't work with the mist (I got these strange white ridges). I found the misty atmosphere more important. Hopefully this problem will be solved some day.
---Dune
Post that on another website, and remember to not tell anyone it's a render. See how many people think it's a photo. Great!