Nature mimics fine art in these abtract patterns at Mesquite Flat Dunes in Death Valley National Park. This was taken with a Nikon D 7100 and Nikkor Zoom lens (18-200 mm.), with a Hoya Circular Polarizer. I useda Gitzo tripod and Arca Swoiss Head. The ISO was 200, F/18, 1/40th second exposure, and a Focal Length o 95 mm.