Book excerpt: The Casma Valley of Peru’s north central coast contains the largest New World structure of its time period---2500 to 200 BC---as well as one of the densest concentrations of early sites. In this detailed and thought-provoking volume, Sheila and Thomas Pozorski date each major early site, assess this important valley’s diet and subsistence changes through time, and begin to reconstruct the development of Casma Valley society.Fifteen sites are surveyed, including Pampa de las Llamas-Moxeke, the earliest planned city in the New World. The Pozorskis then synthesize their own fieldwork and previous work in the Casma Valley to chart its development during the critical time when civilization was emerging. The result: a scenario which is somewhat revolutionary in the context of more traditional views of Andean prehistory.Early Settlement and Subsistence in the Casma Valley, Peru adds substantially to the growing body of evidence that the earliest development of Andean civilization occurred on the coast rather than in the highlands. This volume presents comparative data for students of emerging civilizations worldwide and will be of value not only to Andean and New World archaeologists but also to everyone interested in the emergence of complex societies.