Setubandha is a term used to describe a group of people who
have come together to form ("Bridge Construction") Rama's conquest of
Lanka is described by constructing a bridge over the ocean straits in this
early medieval poetry based on the epic Ramayana. 
The poem is written in Prakrit, a phrase that refers to the
grammatically simpler vernacular languages that evolved from Sanskrit as a
result of spontaneous linguistic development. 
The poem has been attributed to Kalidasa, the greatest
Sanskrit poet, incorrectly. 
The real author has yet to be discovered.