During the last tsunami in December 2004, the Ramar Bridge, also known as Adams Bridge in the Palk Bay acted as a natural barrier preventing the direct devastation of the entire South Indian coastline, south and southwest of Nagapattinam. Thus the Ramar Bridge, traditionally and popularly also known as Ramasethu, played a key role in protecting the coastline in South India against the unforeseen ravages of the tsunami in December, 2004
Click below to read more.. http://ramsethu.org/expert1.html
