Now a days people are making the ram sethu a big issue Some times they quote kamb ramayan, tulsi ramayana, molla ramayan, etc. Actually the basis of Ramayan is Valmiki Ramayan. In this, Valmiki clearly described that Ram alongwith his vanara sena built a sethu from Rameshwaram to Lanka with the help of Neel & Aneel, architects (rather civil engineers)of the sethu Sugreeva while sending his sena in search of Sita to all four corners of the world, described the topography of the world with the physiques languages, mannerisms of the people to the incharges of the sena.While sending Hanuman to south side he described about the towns enroute, distance from sea bed to Lanka, etc. If one reads Valmiki Ramayan printed by Geeta Press, Gorakhpur in almost major indian languages nobody will raise such nonsensical issues about the existence of ram setu.