The Mahabharata and the Ramayana were two epic poems from this civilization.

We have that both poems were epic poems from the line of Sanskrit civilization that developed roughly in the area of ancient India. They are 2 of the longest poems in world history and they have not only tales but also philosophical comments, advice and thus they play an important role in Hinduism; that is so because the deities of Hinduism are involved in the story arc of both poems.