[ROSOBORONEXPORTCORP]

To be technical:
http://chambcra.freeshell.org/mars1.jpg
http://chambcra.freeshell.org/mars2.jpg

Both from EECH (a helicopter sim).

Personally, I'd go with a new version of X-plane 9.40 (or failing that Orbiter or one of the free mars rover/glider sims)