The extreme contrast between the mountain and lowland regions, combined with the odd texture you chose for the mountains, reminds me a lot of the Aïr Mountains:
File:G06 s65 63158.jpg - Wikipedia, the free encyclopedia
With less saturated color, your map would resemble an oasis in such a region. I don't like the style of the white areas. Their edges are so smooth and soft that they look like clouds (which only reinforces the satellite image look you have going), but then the dark markings appear to be on top of them.