This investigative work reveals the vast unknown past of India lying in incomprehensibility, and whatever diminutive of it is known, is a mere tip of the veiled iceberg. The author cites that prior to India's Aryanisation, there were a thriving tribal land as evident from presence of countless megaliths spread across her. The author makes us known that many prevailing women-oriented ceremonies have their origin in this period. He throws light on the many non-Sanskritic rituals, traditions and customs which gradually became part of the Hindu fold. He also points towards the use of many Mundari words in European languages. To this end, the author points toward similarities between India and far placed Britain pointing to contacts between the Kolarian tribes and the Europeans in those times. The author gives a new definition to megaliths stating that not all these monuments in India were related to the dead but were also created for astronomical purposes like the ones in U.K. and Europe. He hits out at the acknowledged account that mathematics and astronomy in India were the contributions of the Aryans giving various evidences that it was the tribal megalithic people with whom this credit lies with. The book ambles on the path which many fear to tread shattering many accepted myths; hence, this book is bound to raise many controversies and debates. Abundantly illustrated and lucidly written, this book takes us on a journey into the past which most of us are oblivious of. It is this venture into the unknown prehistory and discovery of a new India due to which possession of this book becomes a must.