Sand Dunes is a calming Windows theme that shows beautiful desert scenes. Each background has a special look, from sunset colors to peaceful horizons. The first picture is dramatic with golden light on a dune. The second has red dunes and plants, full of life. The third uses soft pastels for a quiet mood, good for focus. The last shows white sand and a tree, inspiring calm and creativity. This theme is a lovely way to enjoy nature on your desktop.