The rock is a recreation of a volcanic rock I have in my living room, originating from the lake Balaton. I used displacement an normal maps to get the details, based on the color map.
The desert i made from an ocean type displacement (with dialing down the waves significantly) and adding some subtle tracks by sculpting.
Finally post production added some depth of field, vignetting, chromatic aberration and a look of being a hasty taken photograph, not to let the little guy slip away.
So, I hope you like it :-)