Book excerpt: Approximately 40,000 years ago during the transition between Middle and Upper Paleolithic eras in Europe, Neanderthal man was being replaced by the anatomically modern man. Dr. Allsworth-Jones explores this period, focusing on a characteristic style of Central European cave called the Szeletian. His first-hand knowledge of the caves and in-depth study of related literature support his thesis that the Szeletian caves were the creation of Neanderthal man and were thus linked to that important period in prehistory.