T.Mukherji, Thank you for the link and i have gone through that. It is a claim by Telegraph that it is an unpublished 'opinion'.Its basis seems to rest on thin ice like 'loose corals'. In this modern era, it is very easy to determine whether a structure is natural or man made. If we can send probes to Mars and other planets to search for life, determining the so called 'RamSethu'is kid's job. The same Telegraph published a news item later about the message from NASA that it is a natural formation. May this be of some interest to you . Old Tamil Literatures speak of a great land mass submerged by ocean which included present day SriLanka.They speak of the divisions in that land, a River and a mountain chain in it. 'Silapathikaram' and 'Manimekalai' , two of the great epics written some 2000 years in Tamil speak of an island by name'ManiPallavam'which existed between India and SriLanka in the same vicinity of this contraversial bridge.