Repo of Algodones Dunescape #1

I'm processing about a half dozen or so new dunescapes that I plan to share here over the next few weeks.  All of these were taken this Spring in the Algodones Dunes area near the Salton Sea in California.  The trip was part vacation (with morning at a date farm, afternoon at Salvation Mountain, and early evening only in the dunes). The dunes have two parts: one an active OHV area, one a wilderness area.  We only had time to access the more heavily used areas near the road.

This image was one of the first that I took.  I did not use any particularly creative techniques in post, just some contrast, etc.  The clouds made some dunes look black, others the more typical buff.  I'm interested in whether the effect is sufficiently engaging and, as usual, I'm eager for any feedback and suggestions you all might have. 

Canon 5D3 with 24-105mm at 90mm
ISO 125, f/11, 1/640s