This Book describes in depth the First Siva temple Thiru Uthirakosamangai at Ramanathapuram District, Tamilnadu, India and written in Tamil Language with a lucid style . It depicts and poses how Lord Nataraja worship has been originated and by whom and for what, etc. This is about the biggest emerald stone of seven and half feet and explains how Lord Nataraja's statue was created out of it. For all saivists and Hindus it is a must to read.