Ravanolbhavam (The Origin of Ravana) is a Kathakali play(Aattakatha) authored by Kallekulangara Raghava Pisharodi in Malayalam. Based on the Ramayana, it narrates the story surrounding the origin of Ravana and his rise to power following his penance to Brahma.
References
Ravanolbhavam Wikipedia(Text) CC BY-SA