El Llano Estacado, a major new work of Western history, reveals the historical heart of one of the world's unique regions—the enormous mesaland of the Southern High Plains in Texas and New Mexico. From the Canadian River in the north to the Edwards Plateau in the south, from the Pecos River in the west to the fantastic canyonlands of the Red, Pease, Brazos, and Colorado Rivers in the east, the 50,000 square miles of "the Llano" are chronicled over three centuries with an eye to the history and compelling mystery of this special land. Armchair detectives will especially relish the comprehensive discussion of the lost—now possibly rediscovered—Coronado expedition route across the plains.