The present book Historical Geography of Vaigai River Valley seeks to update our knowledge based on the findings obtained from the intensive explorations carried out by the authors and excavations conducted in the study area particularly at Alagankulam and Kiladi to understand the processes of cultural transformation from Middle Palaeolithic to Historical period through mutually supportive works and interpretative techniques. The archaeological, epigraphical, literary and numismatic data are analysed and synthesized within a given political, social, economic and religious context to give a cohesive picture on the historical settings of the micro region. The micro level maps provide a good amount of knowledge on the emergence and re-emergence of settlements. The carefully prepared illustrations are self-explanatory and educative. The book provides a kaleidoscopic view on the nature of cultural processes that undergone in the long span of human life.