In D. L. Birchfield's Field of Honor, a secret underground civilization of Choctaws, deep beneath the Ouachita Mountains of southeastern Oklahoma, has evolved into a high-tech culture, supported by the labor of slaves kidnapped from the surface. Underground, long yellow rows of corn stand tall and ripe in immense, brightly lit greenhouses, and great games of stickball are played in the dark in huge stadiums with glowing balls. The twentieth...