These young Hopi women with their magnificent squash blossom hairstyles are engaged in the essential task of grinding grain to make flour. And perhaps the fruits of their labor were later used for a Hopi bread called “piki.” This was created from flour from blue corn, and the dough was baked wafer-thin on large flat stones. How many Hopi are around today? The 2010 U.S. Census registered nearly 20,000 people. Photo Credit: Buyenlarge/Getty Images