“Journey of a Civilization: Indus to Vaigai” seeks to establish common grounds and connecting threads that link the riddles of Indology, namely the authorship and language of the Indus Valley Civilization and the origins of Dravidian language speaking people in general and Old Tamil traditions in particular. Balakrishnan considers these issues to be not only interconnected but two sides of the same coin. This book aims to place new evidence about the Dravidian affiliation with the language of the Indus people and positions the ancient Sangam Tamilcorpus as a proto-document that is relevant for understanding Tamilpre-history which had probable connections to the Indus Civilization.