Challuabamba (chī-wa-bamba)--now a developing suburb of Cuenca, the principal city in the southern highlands of Ecuador--has been known for a century as an ancient site that produced exceptionally fine pottery in great quantities. Suspecting that Challuabamban ceramics might provide a link between earlier, preceramic culture and later, highly developed Formative period art, Terence Grieder led an archaeological investigation of the site between...