Wind swept patterns in the sand can be seen at the Mesquite Flat Dunes in Death Valley National Park early in the morning. I was particularly attracted to this scene, given the zebra-like lines. This was photographed with a Nikon D 7100 and Nikkor Zoom Lens (18-200 mm.), with a Hoya Circular Polarizer attached to a Gitzo Tripod and Arca-Swiss Head. The ISO was 200, F/18, 1/60th second exposure, and a Focal Length of 44 mm.