Sands from (clockwise from top left): Pulau Tiga, Borneo; Pula Dinawan, Borneo; Shell Island, Florida; Silver Strand, California; Westport-Union State Beach, California; Stovepipe Wells, Death Valley; Coral Pink Sand Dunes Park, Utah; Livermore, California; Gold Rush Discovery Site, California; Ione, California; Zion National Park, Utah; Glass Beach, Hawaii; El Paso, Texas; Point Pinos Beach, Monterey, California.

∞ | comment