Prasad, As "Sunshine" says below, it is not clear what NASA's stand is. The formation is too neat and straight in the linkage it provides, to give rise to the initial question -"Could it have been built for the sole purpose of crossing this sea?" There are many reef formations but none as "deliberate-looking" as this. I am told there no other reefs in the vicinity, so that we can see this as part of a greater chain, such as the Great Barrier Reef in Australian waters. Do you know of any other connecting two land-masses? If you take the totality of the Ramayana, all the detailed and accurate description of the mountains, lakes, forests and savannahs in India and Sri Lanka, it makes you pause to think hard. The Ramayana is too entrenched in the traditions of not just one Asian country but in almost all of SEAsia as well - as far as the Philippines. Raja Ram's sons, Lava and Kucha travelled throughout North, Northwest India, narrating the story of their parents, Lava settled in the Punjab in a city now named after him, LAHORE [LAVAHOOR]. So, place names, the depth to which the ordinary people of India know the Ramayana for generations. Did you know, TulsiDas wrote the RamCharitMananas because he found that the ordinary people did not understand Valmiki's Sanskrit Ramayana. He wrote his Hindi version by PUBLIC DEMAND, so to speak. I have seen agnostics and atheists listening to a good Upanyasakar narrating the Ramayana, shedding tears as the story unfolds. It is a moving story.