Wikipedia
The name Rama's Bridge or Rama Setu (Sanskrit; setu: bridge) refers to the bridge built by the Vanara army of Lord Rama in Ramayana, with instructions from Nala, which he used to reach Lanka and rescue Sita from the Rakshasa king, Ravana. The Ramayana attributes the building of this bridge to Rama in verse 2-22-76, naming it as Setubandhanam, a name that persists until today.
In the memory of Sethubandhan, Thriprayar Sree Ramaswamy temple (Trichur District) observes "Sethubandhan" in every year. This is celebrated as a festival on ”Thiruvonam” day in the Malayalam Month”Kanni” (October – November) in every year.
Sethubandhanam is a 1974 Indian Malayalam film, directed by J. Sasikumar and produced by R Somanathan. The film stars Prem Nazir, Sukumari, Jayabharathi and Adoor Bhasi in lead roles. The film had musical score by G. Devarajan. The film was a remake of Tamil film Kuzhandaiyum Deivamum which in turn was adaptation of Disney's The Parent Trap, which in turn was based on 1953 comedy Twice Upon a Time, which was based on the German novel Lottie and Lisa.