Thyn - I like the extra cloud / pyroclastic cloud detail you have in the update, but I actually prefer the mood in the first one. I guess it depends what area you are trying to depict. There were parts of the Emin Muil that had that raking light coming in under the heavy atmospherics and catching some of the spiney trees, but other areas that were purely rocks. The second version feels a bit too green and grassy, I would deaden that a bit and maybe add a few dead trees if you like that version, or go back to the pure rock surfaces more like in this matte that Dusso did:
WORK BY YANNICK DUSSEAULT
It has to be said though that this is another awesome piece of work from you. You are really nailing these every time at the moment!