I'm a bit limited to what I can say in terms of what it is. Sorry. Everything is very much in an early stage, including geometry.
What I can say is that the six frames are based and set around TG landscapes, and you really don't see much of it in this frame. I went with this approach to see what I could get out of TG, plus it allows me to set up any camera angles without having to create a new matte per frame. The dust clouds are photoshop, with the intention of using stock dust cloud footage which come with z-depth in After Effects, where most of the grading will occur, augmented with other particle effects. The falling rocks are a precursor to what will eventually be animated in Max through a particle system, which will involve collision detection and sub particle dust splash. I used After Effects to comp this still, because it's a simple matter of substituting animated passes in a non-destructive work flow if/when this goes to animation. What I need to do eventually is work out what package is more efficient at delivering the various elements and optimize those scenes to minimum render times. TG will very much be in the plate generation, maybe some cloud animation, but although these objects were rendered in TG, it looks like I'll have to keep them in Max and Vray for future renders.