That four-day windstorm left 10-foot walls of sand on the south slope of every dune crest where it
had been blown and drifted by the incessant north winds. I have several shots in this gallery which
shows these unusual crests on the dunes - it's the first time I've seen the dunes like this - very
very interesting, and fun for abstract photography!

1/800s at f/11, ISO 800. Shot with 70-200L at 200mm. Handheld.